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14487 vulnerabilities by linux
CVE-2026-31404 (GCVE-0-2026-31404)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-04-03 15:16
VLAI?
Title
NFSD: Defer sub-object cleanup in export put callbacks
Summary
In the Linux kernel, the following vulnerability has been resolved:
NFSD: Defer sub-object cleanup in export put callbacks
svc_export_put() calls path_put() and auth_domain_put() immediately
when the last reference drops, before the RCU grace period. RCU
readers in e_show() and c_show() access both ex_path (via
seq_path/d_path) and ex_client->name (via seq_escape) without
holding a reference. If cache_clean removes the entry and drops the
last reference concurrently, the sub-objects are freed while still
in use, producing a NULL pointer dereference in d_path.
Commit 2530766492ec ("nfsd: fix UAF when access ex_uuid or
ex_stats") moved kfree of ex_uuid and ex_stats into the
call_rcu callback, but left path_put() and auth_domain_put() running
before the grace period because both may sleep and call_rcu
callbacks execute in softirq context.
Replace call_rcu/kfree_rcu with queue_rcu_work(), which defers the
callback until after the RCU grace period and executes it in process
context where sleeping is permitted. This allows path_put() and
auth_domain_put() to be moved into the deferred callback alongside
the other resource releases. Apply the same fix to expkey_put(),
which has the identical pattern with ek_path and ek_client.
A dedicated workqueue scopes the shutdown drain to only NFSD
export release work items; flushing the shared
system_unbound_wq would stall on unrelated work from other
subsystems. nfsd_export_shutdown() uses rcu_barrier() followed
by flush_workqueue() to ensure all deferred release callbacks
complete before the export caches are destroyed.
Reviwed-by: Jeff Layton <jlayton@kernel.org>
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
c224edca7af028828e2ad866b61d731b5e72b46d , < 2829e80d29b627886d12b5ea40856d56b516e67d
(git)
Affected: c224edca7af028828e2ad866b61d731b5e72b46d , < f5ab1bec5fa18731e0b1b1e60c9a68667ac73ea2 (git) Affected: c224edca7af028828e2ad866b61d731b5e72b46d , < 48db892356d6cb80f6942885545de4a6dd8d2a29 (git) |
||
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CVE-2026-31403 (GCVE-0-2026-31403)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-04-03 15:16
VLAI?
Title
NFSD: Hold net reference for the lifetime of /proc/fs/nfs/exports fd
Summary
In the Linux kernel, the following vulnerability has been resolved:
NFSD: Hold net reference for the lifetime of /proc/fs/nfs/exports fd
The /proc/fs/nfs/exports proc entry is created at module init
and persists for the module's lifetime. exports_proc_open()
captures the caller's current network namespace and stores
its svc_export_cache in seq->private, but takes no reference
on the namespace. If the namespace is subsequently torn down
(e.g. container destruction after the opener does setns() to a
different namespace), nfsd_net_exit() calls nfsd_export_shutdown()
which frees the cache. Subsequent reads on the still-open fd
dereference the freed cache_detail, walking a freed hash table.
Hold a reference on the struct net for the lifetime of the open
file descriptor. This prevents nfsd_net_exit() from running --
and thus prevents nfsd_export_shutdown() from freeing the cache
-- while any exports fd is open. cache_detail already stores
its net pointer (cd->net, set by cache_create_net()), so
exports_release() can retrieve it without additional per-file
storage.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5 , < c7f406fb341d6747634b8b1fa5461656e5e56076
(git)
Affected: 96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5 , < d1a19217995df9c7e4118f5a2820c5032fef2945 (git) Affected: 96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5 , < e3d77f935639e6ae4b381c80464c31df998d61f4 (git) Affected: 96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5 , < db4a9f99b12a7ee1c19d86c83a3b752c7effa6c6 (git) Affected: 96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5 , < 6a8d70e2ad6aad2c345a5048edcb8168036f97d6 (git) Affected: 96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5 , < e7fcf179b82d3a3730fd8615da01b087cc654d0b (git) |
|||||||
|
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CVE-2026-31402 (GCVE-0-2026-31402)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-04-03 15:16
VLAI?
Title
nfsd: fix heap overflow in NFSv4.0 LOCK replay cache
Summary
In the Linux kernel, the following vulnerability has been resolved:
nfsd: fix heap overflow in NFSv4.0 LOCK replay cache
The NFSv4.0 replay cache uses a fixed 112-byte inline buffer
(rp_ibuf[NFSD4_REPLAY_ISIZE]) to store encoded operation responses.
This size was calculated based on OPEN responses and does not account
for LOCK denied responses, which include the conflicting lock owner as
a variable-length field up to 1024 bytes (NFS4_OPAQUE_LIMIT).
When a LOCK operation is denied due to a conflict with an existing lock
that has a large owner, nfsd4_encode_operation() copies the full encoded
response into the undersized replay buffer via read_bytes_from_xdr_buf()
with no bounds check. This results in a slab-out-of-bounds write of up
to 944 bytes past the end of the buffer, corrupting adjacent heap memory.
This can be triggered remotely by an unauthenticated attacker with two
cooperating NFSv4.0 clients: one sets a lock with a large owner string,
then the other requests a conflicting lock to provoke the denial.
We could fix this by increasing NFSD4_REPLAY_ISIZE to allow for a full
opaque, but that would increase the size of every stateowner, when most
lockowners are not that large.
Instead, fix this by checking the encoded response length against
NFSD4_REPLAY_ISIZE before copying into the replay buffer. If the
response is too large, set rp_buflen to 0 to skip caching the replay
payload. The status is still cached, and the client already received the
correct response on the original request.
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c9452c0797c95cf2378170df96cf4f4b3bca7eff
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8afb437ea1f70cacb4bbdf11771fb5c4d720b965 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < dad0c3c0a8e5d1d6eb0fc455694ce3e25e6c57d0 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0f0e2a54a31a7f9ad2915db99156114872317388 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ae8498337dfdfda71bdd0b807c9a23a126011d76 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5133b61aaf437e5f25b1b396b14242a6bb0508e2 (git) |
|||||||
|
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CVE-2026-31401 (GCVE-0-2026-31401)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-04-03 15:16
VLAI?
Title
HID: bpf: prevent buffer overflow in hid_hw_request
Summary
In the Linux kernel, the following vulnerability has been resolved:
HID: bpf: prevent buffer overflow in hid_hw_request
right now the returned value is considered to be always valid. However,
when playing with HID-BPF, the return value can be arbitrary big,
because it's the return value of dispatch_hid_bpf_raw_requests(), which
calls the struct_ops and we have no guarantees that the value makes
sense.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 , < d6efaa50af62fb0790dd1fd4e7e5506b46312510
(git)
Affected: 8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 , < 73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1 (git) Affected: 8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 , < eb57dae20fdf6f3069cdc07821fa3bb46de381d7 (git) Affected: 8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 , < 2b658c1c442ec1cd9eec5ead98d68662c40fe645 (git) |
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CVE-2026-31400 (GCVE-0-2026-31400)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-04-03 15:16
VLAI?
Title
sunrpc: fix cache_request leak in cache_release
Summary
In the Linux kernel, the following vulnerability has been resolved:
sunrpc: fix cache_request leak in cache_release
When a reader's file descriptor is closed while in the middle of reading
a cache_request (rp->offset != 0), cache_release() decrements the
request's readers count but never checks whether it should free the
request.
In cache_read(), when readers drops to 0 and CACHE_PENDING is clear, the
cache_request is removed from the queue and freed along with its buffer
and cache_head reference. cache_release() lacks this cleanup.
The only other path that frees requests with readers == 0 is
cache_dequeue(), but it runs only when CACHE_PENDING transitions from
set to clear. If that transition already happened while readers was
still non-zero, cache_dequeue() will have skipped the request, and no
subsequent call will clean it up.
Add the same cleanup logic from cache_read() to cache_release(): after
decrementing readers, check if it reached 0 with CACHE_PENDING clear,
and if so, dequeue and free the cache_request.
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7bcd5e318876ac638c8ceade7a648e76ac8c48e1
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 41f6ba6c98a618043d2cd71030bf9a752dfab8b2 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 301670dcd098c1fe5c2fe90fb3c7a8f4814d2351 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < be5c35960e5ead70862736161836e2d1bc7352dc (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 373457de14281c1fc7cace6fc4c8a267fc176673 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 17ad31b3a43b72aec3a3d83605891e1397d0d065 (git) |
|||||||
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CVE-2026-31399 (GCVE-0-2026-31399)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-04-03 15:16
VLAI?
Title
nvdimm/bus: Fix potential use after free in asynchronous initialization
Summary
In the Linux kernel, the following vulnerability has been resolved:
nvdimm/bus: Fix potential use after free in asynchronous initialization
Dingisoul with KASAN reports a use after free if device_add() fails in
nd_async_device_register().
Commit b6eae0f61db2 ("libnvdimm: Hold reference on parent while
scheduling async init") correctly added a reference on the parent device
to be held until asynchronous initialization was complete. However, if
device_add() results in an allocation failure the ref count of the
device drops to 0 prior to the parent pointer being accessed. Thus
resulting in use after free.
The bug bot AI correctly identified the fix. Save a reference to the
parent pointer to be used to drop the parent reference regardless of the
outcome of device_add().
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < 9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4d
(git)
Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20e (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < 2c638259ad750833fd46a0cf57672a618542d84c (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < a226e5b49e5fe8c98b14f8507de670189d191348 (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < 84af19855d1abdee3c9d57c0684e2868e391793c (git) Affected: b6eae0f61db27748606cc00dafcfd1e2c032f0a5 , < a8aec14230322ed8f1e8042b6d656c1631d41163 (git) Affected: 8954771abdea5c34280870e35592c7226a816d95 (git) Affected: 3e63a7f25cc85d3d3e174b9b0e3489ebb7eaf4ab (git) Affected: 1490de2bb0836fc0631c04d0559fdf81545b672f (git) Affected: e31a8418c8df7e6771414f99ed3d95ba8aca4e05 (git) Affected: 4f1a55a4f990016406147cf3e0c9487bf83e50f0 (git) |
|||||||
|
|||||||||
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm/bus: Fix potential use after free in asynchronous initialization\n\nDingisoul with KASAN reports a use after free if device_add() fails in\nnd_async_device_register().\n\nCommit b6eae0f61db2 (\"libnvdimm: Hold reference on parent while\nscheduling async init\") correctly added a reference on the parent device\nto be held until asynchronous initialization was complete. However, if\ndevice_add() results in an allocation failure the ref count of the\ndevice drops to 0 prior to the parent pointer being accessed. Thus\nresulting in use after free.\n\nThe bug bot AI correctly identified the fix. Save a reference to the\nparent pointer to be used to drop the parent reference regardless of the\noutcome of device_add()."
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CVE-2026-31398 (GCVE-0-2026-31398)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-04-03 15:16
VLAI?
Title
mm/rmap: fix incorrect pte restoration for lazyfree folios
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm/rmap: fix incorrect pte restoration for lazyfree folios
We batch unmap anonymous lazyfree folios by folio_unmap_pte_batch. If the
batch has a mix of writable and non-writable bits, we may end up setting
the entire batch writable. Fix this by respecting writable bit during
batching.
Although on a successful unmap of a lazyfree folio, the soft-dirty bit is
lost, preserve it on pte restoration by respecting the bit during
batching, to make the fix consistent w.r.t both writable bit and
soft-dirty bit.
I was able to write the below reproducer and crash the kernel.
Explanation of reproducer (set 64K mTHP to always):
Fault in a 64K large folio. Split the VMA at mid-point with
MADV_DONTFORK. fork() - parent points to the folio with 8 writable ptes
and 8 non-writable ptes. Merge the VMAs with MADV_DOFORK so that
folio_unmap_pte_batch() can determine all the 16 ptes as a batch. Do
MADV_FREE on the range to mark the folio as lazyfree. Write to the memory
to dirty the pte, eventually rmap will dirty the folio. Then trigger
reclaim, we will hit the pte restoration path, and the kernel will crash
with the trace given below.
The BUG happens at:
BUG_ON(atomic_inc_return(&ptc->anon_map_count) > 1 && rw);
The code path is asking for anonymous page to be mapped writable into the
pagetable. The BUG_ON() firing implies that such a writable page has been
mapped into the pagetables of more than one process, which breaks
anonymous memory/CoW semantics.
[ 21.134473] kernel BUG at mm/page_table_check.c:118!
[ 21.134497] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP
[ 21.135917] Modules linked in:
[ 21.136085] CPU: 1 UID: 0 PID: 1735 Comm: dup-lazyfree Not tainted 7.0.0-rc1-00116-g018018a17770 #1028 PREEMPT
[ 21.136858] Hardware name: linux,dummy-virt (DT)
[ 21.137019] pstate: 21400005 (nzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
[ 21.137308] pc : page_table_check_set+0x28c/0x2a8
[ 21.137607] lr : page_table_check_set+0x134/0x2a8
[ 21.137885] sp : ffff80008a3b3340
[ 21.138124] x29: ffff80008a3b3340 x28: fffffdffc3d14400 x27: ffffd1a55e03d000
[ 21.138623] x26: 0040000000000040 x25: ffffd1a55f7dd000 x24: 0000000000000001
[ 21.139045] x23: 0000000000000001 x22: 0000000000000001 x21: ffffd1a55f217f30
[ 21.139629] x20: 0000000000134521 x19: 0000000000134519 x18: 005c43e000040000
[ 21.140027] x17: 0001400000000000 x16: 0001700000000000 x15: 000000000000ffff
[ 21.140578] x14: 000000000000000c x13: 005c006000000000 x12: 0000000000000020
[ 21.140828] x11: 0000000000000000 x10: 005c000000000000 x9 : ffffd1a55c079ee0
[ 21.141077] x8 : 0000000000000001 x7 : 005c03e000040000 x6 : 000000004000ffff
[ 21.141490] x5 : ffff00017fffce00 x4 : 0000000000000001 x3 : 0000000000000002
[ 21.141741] x2 : 0000000000134510 x1 : 0000000000000000 x0 : ffff0000c08228c0
[ 21.141991] Call trace:
[ 21.142093] page_table_check_set+0x28c/0x2a8 (P)
[ 21.142265] __page_table_check_ptes_set+0x144/0x1e8
[ 21.142441] __set_ptes_anysz.constprop.0+0x160/0x1a8
[ 21.142766] contpte_set_ptes+0xe8/0x140
[ 21.142907] try_to_unmap_one+0x10c4/0x10d0
[ 21.143177] rmap_walk_anon+0x100/0x250
[ 21.143315] try_to_unmap+0xa0/0xc8
[ 21.143441] shrink_folio_list+0x59c/0x18a8
[ 21.143759] shrink_lruvec+0x664/0xbf0
[ 21.144043] shrink_node+0x218/0x878
[ 21.144285] __node_reclaim.constprop.0+0x98/0x338
[ 21.144763] user_proactive_reclaim+0x2a4/0x340
[ 21.145056] reclaim_store+0x3c/0x60
[ 21.145216] dev_attr_store+0x20/0x40
[ 21.145585] sysfs_kf_write+0x84/0xa8
[ 21.145835] kernfs_fop_write_iter+0x130/0x1c8
[ 21.145994] vfs_write+0x2b8/0x368
[ 21.146119] ksys_write+0x70/0x110
[ 21.146240] __arm64_sys_write+0x24/0x38
[ 21.146380] invoke_syscall+0x50/0x120
[ 21.146513] el0_svc_common.constprop.0+0x48/0xf8
[ 21.146679] do_el0_svc+0x28/0x40
[ 21.146798] el0_svc+0x34/0x110
[ 21.146926] el0t
---truncated---
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
354dffd29575cdf13154e8fb787322354aa9efc4 , < 99888a4f340ca8e839a0524556bd4db76d63f4e0
(git)
Affected: 354dffd29575cdf13154e8fb787322354aa9efc4 , < a0911ccdba41b0871abbf8412857bafedec3dbe1 (git) Affected: 354dffd29575cdf13154e8fb787322354aa9efc4 , < 29f40594a28114b9a9bc87f6cf7bbee9609628f2 (git) |
||
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/rmap: fix incorrect pte restoration for lazyfree folios\n\nWe batch unmap anonymous lazyfree folios by folio_unmap_pte_batch. If the\nbatch has a mix of writable and non-writable bits, we may end up setting\nthe entire batch writable. Fix this by respecting writable bit during\nbatching.\n\nAlthough on a successful unmap of a lazyfree folio, the soft-dirty bit is\nlost, preserve it on pte restoration by respecting the bit during\nbatching, to make the fix consistent w.r.t both writable bit and\nsoft-dirty bit.\n\nI was able to write the below reproducer and crash the kernel. \nExplanation of reproducer (set 64K mTHP to always):\n\nFault in a 64K large folio. Split the VMA at mid-point with\nMADV_DONTFORK. fork() - parent points to the folio with 8 writable ptes\nand 8 non-writable ptes. Merge the VMAs with MADV_DOFORK so that\nfolio_unmap_pte_batch() can determine all the 16 ptes as a batch. Do\nMADV_FREE on the range to mark the folio as lazyfree. Write to the memory\nto dirty the pte, eventually rmap will dirty the folio. Then trigger\nreclaim, we will hit the pte restoration path, and the kernel will crash\nwith the trace given below.\n\nThe BUG happens at:\n\n\tBUG_ON(atomic_inc_return(\u0026ptc-\u003eanon_map_count) \u003e 1 \u0026\u0026 rw);\n\nThe code path is asking for anonymous page to be mapped writable into the\npagetable. The BUG_ON() firing implies that such a writable page has been\nmapped into the pagetables of more than one process, which breaks\nanonymous memory/CoW semantics.\n\n[ 21.134473] kernel BUG at mm/page_table_check.c:118!\n[ 21.134497] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP\n[ 21.135917] Modules linked in:\n[ 21.136085] CPU: 1 UID: 0 PID: 1735 Comm: dup-lazyfree Not tainted 7.0.0-rc1-00116-g018018a17770 #1028 PREEMPT\n[ 21.136858] Hardware name: linux,dummy-virt (DT)\n[ 21.137019] pstate: 21400005 (nzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n[ 21.137308] pc : page_table_check_set+0x28c/0x2a8\n[ 21.137607] lr : page_table_check_set+0x134/0x2a8\n[ 21.137885] sp : ffff80008a3b3340\n[ 21.138124] x29: ffff80008a3b3340 x28: fffffdffc3d14400 x27: ffffd1a55e03d000\n[ 21.138623] x26: 0040000000000040 x25: ffffd1a55f7dd000 x24: 0000000000000001\n[ 21.139045] x23: 0000000000000001 x22: 0000000000000001 x21: ffffd1a55f217f30\n[ 21.139629] x20: 0000000000134521 x19: 0000000000134519 x18: 005c43e000040000\n[ 21.140027] x17: 0001400000000000 x16: 0001700000000000 x15: 000000000000ffff\n[ 21.140578] x14: 000000000000000c x13: 005c006000000000 x12: 0000000000000020\n[ 21.140828] x11: 0000000000000000 x10: 005c000000000000 x9 : ffffd1a55c079ee0\n[ 21.141077] x8 : 0000000000000001 x7 : 005c03e000040000 x6 : 000000004000ffff\n[ 21.141490] x5 : ffff00017fffce00 x4 : 0000000000000001 x3 : 0000000000000002\n[ 21.141741] x2 : 0000000000134510 x1 : 0000000000000000 x0 : ffff0000c08228c0\n[ 21.141991] Call trace:\n[ 21.142093] page_table_check_set+0x28c/0x2a8 (P)\n[ 21.142265] __page_table_check_ptes_set+0x144/0x1e8\n[ 21.142441] __set_ptes_anysz.constprop.0+0x160/0x1a8\n[ 21.142766] contpte_set_ptes+0xe8/0x140\n[ 21.142907] try_to_unmap_one+0x10c4/0x10d0\n[ 21.143177] rmap_walk_anon+0x100/0x250\n[ 21.143315] try_to_unmap+0xa0/0xc8\n[ 21.143441] shrink_folio_list+0x59c/0x18a8\n[ 21.143759] shrink_lruvec+0x664/0xbf0\n[ 21.144043] shrink_node+0x218/0x878\n[ 21.144285] __node_reclaim.constprop.0+0x98/0x338\n[ 21.144763] user_proactive_reclaim+0x2a4/0x340\n[ 21.145056] reclaim_store+0x3c/0x60\n[ 21.145216] dev_attr_store+0x20/0x40\n[ 21.145585] sysfs_kf_write+0x84/0xa8\n[ 21.145835] kernfs_fop_write_iter+0x130/0x1c8\n[ 21.145994] vfs_write+0x2b8/0x368\n[ 21.146119] ksys_write+0x70/0x110\n[ 21.146240] __arm64_sys_write+0x24/0x38\n[ 21.146380] invoke_syscall+0x50/0x120\n[ 21.146513] el0_svc_common.constprop.0+0x48/0xf8\n[ 21.146679] do_el0_svc+0x28/0x40\n[ 21.146798] el0_svc+0x34/0x110\n[ 21.146926] el0t\n---truncated---"
}
],
"providerMetadata": {
"dateUpdated": "2026-04-03T15:16:02.334Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
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"url": "https://git.kernel.org/stable/c/99888a4f340ca8e839a0524556bd4db76d63f4e0"
},
{
"url": "https://git.kernel.org/stable/c/a0911ccdba41b0871abbf8412857bafedec3dbe1"
},
{
"url": "https://git.kernel.org/stable/c/29f40594a28114b9a9bc87f6cf7bbee9609628f2"
}
],
"title": "mm/rmap: fix incorrect pte restoration for lazyfree folios",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-31398",
"datePublished": "2026-04-03T15:16:02.334Z",
"dateReserved": "2026-03-09T15:48:24.085Z",
"dateUpdated": "2026-04-03T15:16:02.334Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31397 (GCVE-0-2026-31397)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-04-03 15:16
VLAI?
Title
mm/huge_memory: fix use of NULL folio in move_pages_huge_pmd()
Summary
In the Linux kernel, the following vulnerability has been resolved:
mm/huge_memory: fix use of NULL folio in move_pages_huge_pmd()
move_pages_huge_pmd() handles UFFDIO_MOVE for both normal THPs and huge
zero pages. For the huge zero page path, src_folio is explicitly set to
NULL, and is used as a sentinel to skip folio operations like lock and
rmap.
In the huge zero page branch, src_folio is NULL, so folio_mk_pmd(NULL,
pgprot) passes NULL through folio_pfn() and page_to_pfn(). With
SPARSEMEM_VMEMMAP this silently produces a bogus PFN, installing a PMD
pointing to non-existent physical memory. On other memory models it is a
NULL dereference.
Use page_folio(src_page) to obtain the valid huge zero folio from the
page, which was obtained from pmd_page() and remains valid throughout.
After commit d82d09e48219 ("mm/huge_memory: mark PMD mappings of the huge
zero folio special"), moved huge zero PMDs must remain special so
vm_normal_page_pmd() continues to treat them as special mappings.
move_pages_huge_pmd() currently reconstructs the destination PMD in the
huge zero page branch, which drops PMD state such as pmd_special() on
architectures with CONFIG_ARCH_HAS_PTE_SPECIAL. As a result,
vm_normal_page_pmd() can treat the moved huge zero PMD as a normal page
and corrupt its refcount.
Instead of reconstructing the PMD from the folio, derive the destination
entry from src_pmdval after pmdp_huge_clear_flush(), then handle the PMD
metadata the same way move_huge_pmd() does for moved entries by marking it
soft-dirty and clearing uffd-wp.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
e3981db444a0a18d350d9f92e3f2e8d489b54211 , < f3caaee0f9e489fd2282d4ce45791dc8aed2da62
(git)
Affected: e3981db444a0a18d350d9f92e3f2e8d489b54211 , < e3133d0986dc5a231d5419167dbac65312b28b41 (git) Affected: e3981db444a0a18d350d9f92e3f2e8d489b54211 , < fae654083bfa409bb2244f390232e2be47f05bfc (git) |
||
{
"containers": {
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{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"versionType": "git"
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"status": "affected",
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"versionType": "git"
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"programFiles": [
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"vendor": "Linux",
"versions": [
{
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"version": "6.16"
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"status": "unaffected",
"version": "0",
"versionType": "semver"
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{
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"version": "6.18.20",
"versionType": "semver"
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{
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"version": "6.19.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0-rc5",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.20",
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"vulnerable": true
},
{
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}
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"negate": false,
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}
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}
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: fix use of NULL folio in move_pages_huge_pmd()\n\nmove_pages_huge_pmd() handles UFFDIO_MOVE for both normal THPs and huge\nzero pages. For the huge zero page path, src_folio is explicitly set to\nNULL, and is used as a sentinel to skip folio operations like lock and\nrmap.\n\nIn the huge zero page branch, src_folio is NULL, so folio_mk_pmd(NULL,\npgprot) passes NULL through folio_pfn() and page_to_pfn(). With\nSPARSEMEM_VMEMMAP this silently produces a bogus PFN, installing a PMD\npointing to non-existent physical memory. On other memory models it is a\nNULL dereference.\n\nUse page_folio(src_page) to obtain the valid huge zero folio from the\npage, which was obtained from pmd_page() and remains valid throughout.\n\nAfter commit d82d09e48219 (\"mm/huge_memory: mark PMD mappings of the huge\nzero folio special\"), moved huge zero PMDs must remain special so\nvm_normal_page_pmd() continues to treat them as special mappings.\n\nmove_pages_huge_pmd() currently reconstructs the destination PMD in the\nhuge zero page branch, which drops PMD state such as pmd_special() on\narchitectures with CONFIG_ARCH_HAS_PTE_SPECIAL. As a result,\nvm_normal_page_pmd() can treat the moved huge zero PMD as a normal page\nand corrupt its refcount.\n\nInstead of reconstructing the PMD from the folio, derive the destination\nentry from src_pmdval after pmdp_huge_clear_flush(), then handle the PMD\nmetadata the same way move_huge_pmd() does for moved entries by marking it\nsoft-dirty and clearing uffd-wp."
}
],
"providerMetadata": {
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"shortName": "Linux"
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"references": [
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"url": "https://git.kernel.org/stable/c/f3caaee0f9e489fd2282d4ce45791dc8aed2da62"
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"url": "https://git.kernel.org/stable/c/e3133d0986dc5a231d5419167dbac65312b28b41"
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{
"url": "https://git.kernel.org/stable/c/fae654083bfa409bb2244f390232e2be47f05bfc"
}
],
"title": "mm/huge_memory: fix use of NULL folio in move_pages_huge_pmd()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-31397",
"datePublished": "2026-04-03T15:16:01.427Z",
"dateReserved": "2026-03-09T15:48:24.085Z",
"dateUpdated": "2026-04-03T15:16:01.427Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-31396 (GCVE-0-2026-31396)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:16 – Updated: 2026-04-03 15:16
VLAI?
Title
net: macb: fix use-after-free access to PTP clock
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: macb: fix use-after-free access to PTP clock
PTP clock is registered on every opening of the interface and destroyed on
every closing. However it may be accessed via get_ts_info ethtool call
which is possible while the interface is just present in the kernel.
BUG: KASAN: use-after-free in ptp_clock_index+0x47/0x50 drivers/ptp/ptp_clock.c:426
Read of size 4 at addr ffff8880194345cc by task syz.0.6/948
CPU: 1 PID: 948 Comm: syz.0.6 Not tainted 6.1.164+ #109
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.1-0-g3208b098f51a-prebuilt.qemu.org 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x8d/0xba lib/dump_stack.c:106
print_address_description mm/kasan/report.c:316 [inline]
print_report+0x17f/0x496 mm/kasan/report.c:420
kasan_report+0xd9/0x180 mm/kasan/report.c:524
ptp_clock_index+0x47/0x50 drivers/ptp/ptp_clock.c:426
gem_get_ts_info+0x138/0x1e0 drivers/net/ethernet/cadence/macb_main.c:3349
macb_get_ts_info+0x68/0xb0 drivers/net/ethernet/cadence/macb_main.c:3371
__ethtool_get_ts_info+0x17c/0x260 net/ethtool/common.c:558
ethtool_get_ts_info net/ethtool/ioctl.c:2367 [inline]
__dev_ethtool net/ethtool/ioctl.c:3017 [inline]
dev_ethtool+0x2b05/0x6290 net/ethtool/ioctl.c:3095
dev_ioctl+0x637/0x1070 net/core/dev_ioctl.c:510
sock_do_ioctl+0x20d/0x2c0 net/socket.c:1215
sock_ioctl+0x577/0x6d0 net/socket.c:1320
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x18c/0x210 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x35/0x80 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
</TASK>
Allocated by task 457:
kmalloc include/linux/slab.h:563 [inline]
kzalloc include/linux/slab.h:699 [inline]
ptp_clock_register+0x144/0x10e0 drivers/ptp/ptp_clock.c:235
gem_ptp_init+0x46f/0x930 drivers/net/ethernet/cadence/macb_ptp.c:375
macb_open+0x901/0xd10 drivers/net/ethernet/cadence/macb_main.c:2920
__dev_open+0x2ce/0x500 net/core/dev.c:1501
__dev_change_flags+0x56a/0x740 net/core/dev.c:8651
dev_change_flags+0x92/0x170 net/core/dev.c:8722
do_setlink+0xaf8/0x3a80 net/core/rtnetlink.c:2833
__rtnl_newlink+0xbf4/0x1940 net/core/rtnetlink.c:3608
rtnl_newlink+0x63/0xa0 net/core/rtnetlink.c:3655
rtnetlink_rcv_msg+0x3c6/0xed0 net/core/rtnetlink.c:6150
netlink_rcv_skb+0x15d/0x430 net/netlink/af_netlink.c:2511
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x6d7/0xa30 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x97e/0xeb0 net/netlink/af_netlink.c:1872
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg+0x14b/0x180 net/socket.c:730
__sys_sendto+0x320/0x3b0 net/socket.c:2152
__do_sys_sendto net/socket.c:2164 [inline]
__se_sys_sendto net/socket.c:2160 [inline]
__x64_sys_sendto+0xdc/0x1b0 net/socket.c:2160
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x35/0x80 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
Freed by task 938:
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1729 [inline]
slab_free_freelist_hook mm/slub.c:1755 [inline]
slab_free mm/slub.c:3687 [inline]
__kmem_cache_free+0xbc/0x320 mm/slub.c:3700
device_release+0xa0/0x240 drivers/base/core.c:2507
kobject_cleanup lib/kobject.c:681 [inline]
kobject_release lib/kobject.c:712 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1cd/0x350 lib/kobject.c:729
put_device+0x1b/0x30 drivers/base/core.c:3805
ptp_clock_unregister+0x171/0x270 drivers/ptp/ptp_clock.c:391
gem_ptp_remove+0x4e/0x1f0 drivers/net/ethernet/cadence/macb_ptp.c:404
macb_close+0x1c8/0x270 drivers/net/ethernet/cadence/macb_main.c:2966
__dev_close_many+0x1b9/0x310 net/core/dev.c:1585
__dev_close net/core/dev.c:1597 [inline]
__dev_change_flags+0x2bb/0x740 net/core/dev.c:8649
dev_change_fl
---truncated---
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
c2594d804d5c8033861d44840673d852d98508c1 , < 341d01087f821aa0f165fb1ffc8bfe4e50776da7
(git)
Affected: c2594d804d5c8033861d44840673d852d98508c1 , < 5653af416a48f6c18f9626ae9df96f814f45ff34 (git) Affected: c2594d804d5c8033861d44840673d852d98508c1 , < 0bb848d8c64938024e45780f8032f1f67d3a3607 (git) Affected: c2594d804d5c8033861d44840673d852d98508c1 , < 1f4714065b2bcbb0a4013fd355b84b848e6cc345 (git) Affected: c2594d804d5c8033861d44840673d852d98508c1 , < eb652535e9ec795ef5c1078f7578eaaed755268b (git) Affected: c2594d804d5c8033861d44840673d852d98508c1 , < 8da13e6d63c1a97f7302d342c89c4a56a55c7015 (git) |
|||||||
|
|||||||||
{
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"programFiles": [
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"versionType": "git"
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.11"
},
{
"lessThan": "4.11",
"status": "unaffected",
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CVE-2026-31395 (GCVE-0-2026-31395)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
bnxt_en: fix OOB access in DBG_BUF_PRODUCER async event handler
Summary
In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: fix OOB access in DBG_BUF_PRODUCER async event handler
The ASYNC_EVENT_CMPL_EVENT_ID_DBG_BUF_PRODUCER handler in
bnxt_async_event_process() uses a firmware-supplied 'type' field
directly as an index into bp->bs_trace[] without bounds validation.
The 'type' field is a 16-bit value extracted from DMA-mapped completion
ring memory that the NIC writes directly to host RAM. A malicious or
compromised NIC can supply any value from 0 to 65535, causing an
out-of-bounds access into kernel heap memory.
The bnxt_bs_trace_check_wrap() call then dereferences bs_trace->magic_byte
and writes to bs_trace->last_offset and bs_trace->wrapped, leading to
kernel memory corruption or a crash.
Fix by adding a bounds check and defining BNXT_TRACE_MAX as
DBG_LOG_BUFFER_FLUSH_REQ_TYPE_ERR_QPC_TRACE + 1 to cover all currently
defined firmware trace types (0x0 through 0xc).
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
84fcd9449fd7882ddfb05ba64d75f9be2d29b2e9 , < 19aa416eed9e4aaf1bbe8da0f7bd9a9be31158c8
(git)
Affected: 84fcd9449fd7882ddfb05ba64d75f9be2d29b2e9 , < b7c7a275447c6d4bf4a36a134682e2e4e20efd4b (git) Affected: 84fcd9449fd7882ddfb05ba64d75f9be2d29b2e9 , < 64dcbde7f8f870a4f2d9daf24ffb06f9748b5dd3 (git) |
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CVE-2026-31394 (GCVE-0-2026-31394)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
mac80211: fix crash in ieee80211_chan_bw_change for AP_VLAN stations
Summary
In the Linux kernel, the following vulnerability has been resolved:
mac80211: fix crash in ieee80211_chan_bw_change for AP_VLAN stations
ieee80211_chan_bw_change() iterates all stations and accesses
link->reserved.oper via sta->sdata->link[link_id]. For stations on
AP_VLAN interfaces (e.g. 4addr WDS clients), sta->sdata points to
the VLAN sdata, whose link never participates in chanctx reservations.
This leaves link->reserved.oper zero-initialized with chan == NULL,
causing a NULL pointer dereference in __ieee80211_sta_cap_rx_bw()
when accessing chandef->chan->band during CSA.
Resolve the VLAN sdata to its parent AP sdata using get_bss_sdata()
before accessing link data.
[also change sta->sdata in ARRAY_SIZE even if it doesn't matter]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 65c25b588994dd422fea73fa322de56e1ae4a33b
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5a86d4e920d9783a198e39cf53f0e410fba5fbd6 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3c6629e859a2211a1fbb4868f915413f80001ca5 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 672e5229e1ecfc2a3509b53adcb914d8b024a853 (git) |
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CVE-2026-31393 (GCVE-0-2026-31393)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
Bluetooth: L2CAP: Validate L2CAP_INFO_RSP payload length before access
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Validate L2CAP_INFO_RSP payload length before access
l2cap_information_rsp() checks that cmd_len covers the fixed
l2cap_info_rsp header (type + result, 4 bytes) but then reads
rsp->data without verifying that the payload is present:
- L2CAP_IT_FEAT_MASK calls get_unaligned_le32(rsp->data), which reads
4 bytes past the header (needs cmd_len >= 8).
- L2CAP_IT_FIXED_CHAN reads rsp->data[0], 1 byte past the header
(needs cmd_len >= 5).
A truncated L2CAP_INFO_RSP with result == L2CAP_IR_SUCCESS triggers an
out-of-bounds read of adjacent skb data.
Guard each data access with the required payload length check. If the
payload is too short, skip the read and let the state machine complete
with safe defaults (feat_mask and remote_fixed_chan remain zero from
kzalloc), so the info timer cleanup and l2cap_conn_start() still run
and the connection is not stalled.
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
4e8402a3f884427f9233ba436459c158d1f2e114 , < 3b646516cba2ebc4b51a72954903326e7c1e443f
(git)
Affected: 4e8402a3f884427f9233ba436459c158d1f2e114 , < 807bd1258453c4c83f6ae9dbc1e7b44860ff40d0 (git) Affected: 4e8402a3f884427f9233ba436459c158d1f2e114 , < 9aeacde4da0f02d42fd968fd32f245828b230171 (git) Affected: 4e8402a3f884427f9233ba436459c158d1f2e114 , < e7ff754e339e3d5ce29aa9f95352d0186df8fbd9 (git) Affected: 4e8402a3f884427f9233ba436459c158d1f2e114 , < db2872d054e467810078e2b9f440a5b326a601b2 (git) Affected: 4e8402a3f884427f9233ba436459c158d1f2e114 , < dd815e6e3918dc75a49aaabac36e4f024d675101 (git) |
|||||||
|
|||||||||
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CVE-2026-31392 (GCVE-0-2026-31392)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
smb: client: fix krb5 mount with username option
Summary
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix krb5 mount with username option
Customer reported that some of their krb5 mounts were failing against
a single server as the client was trying to mount the shares with
wrong credentials. It turned out the client was reusing SMB session
from first mount to try mounting the other shares, even though a
different username= option had been specified to the other mounts.
By using username mount option along with sec=krb5 to search for
principals from keytab is supported by cifs.upcall(8) since
cifs-utils-4.8. So fix this by matching username mount option in
match_session() even with Kerberos.
For example, the second mount below should fail with -ENOKEY as there
is no 'foobar' principal in keytab (/etc/krb5.keytab). The client
ends up reusing SMB session from first mount to perform the second
one, which is wrong.
```
$ ktutil
ktutil: add_entry -password -p testuser -k 1 -e aes256-cts
Password for testuser@ZELDA.TEST:
ktutil: write_kt /etc/krb5.keytab
ktutil: quit
$ klist -ke
Keytab name: FILE:/etc/krb5.keytab
KVNO Principal
---- ----------------------------------------------------------------
1 testuser@ZELDA.TEST (aes256-cts-hmac-sha1-96)
$ mount.cifs //w22-root2/scratch /mnt/1 -o sec=krb5,username=testuser
$ mount.cifs //w22-root2/scratch /mnt/2 -o sec=krb5,username=foobar
$ mount -t cifs | grep -Po 'username=\K\w+'
testuser
testuser
```
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fd4547830720647d4af02ee50f883c4b1cca06e4
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9229709ec8bf85ae7ca53aeee9aa14814cdc1bd2 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d33cbf0bf8979d779900da9be2505d68d9d8da25 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9ee803bfdba0cf739038dbdabdd4c02582c8f2b2 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6e9ff1eb7feedcf46ff2d0503759960ab58e7775 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 12b4c5d98cd7ca46d5035a57bcd995df614c14e1 (git) |
||
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CVE-2026-31391 (GCVE-0-2026-31391)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
crypto: atmel-sha204a - Fix OOM ->tfm_count leak
Summary
In the Linux kernel, the following vulnerability has been resolved:
crypto: atmel-sha204a - Fix OOM ->tfm_count leak
If memory allocation fails, decrement ->tfm_count to avoid blocking
future reads.
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
da001fb651b00e1deeaf24767dd691ae8152a4f5 , < 66ee9c1c3575b5d6afc340faca00fd40ed5b7ad9
(git)
Affected: da001fb651b00e1deeaf24767dd691ae8152a4f5 , < 2bfc83cee05f8b9604502df27d94e8e2b4a3dbf1 (git) Affected: da001fb651b00e1deeaf24767dd691ae8152a4f5 , < 1ab70c260cf16f931a728b2cb63fff5f38c814d8 (git) Affected: da001fb651b00e1deeaf24767dd691ae8152a4f5 , < 6f502049a96b368ea6646c49d9520d6f69a101fa (git) Affected: da001fb651b00e1deeaf24767dd691ae8152a4f5 , < fd262dc6d758232511127372eba866b7600739ba (git) Affected: da001fb651b00e1deeaf24767dd691ae8152a4f5 , < d240b079a37e90af03fd7dfec94930eb6c83936e (git) |
|||||||
|
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CVE-2026-31390 (GCVE-0-2026-31390)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
drm/xe: Fix memory leak in xe_vm_madvise_ioctl
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Fix memory leak in xe_vm_madvise_ioctl
When check_bo_args_are_sane() validation fails, jump to the new
free_vmas cleanup label to properly free the allocated resources.
This ensures proper cleanup in this error path.
(cherry picked from commit 29bd06faf727a4b76663e4be0f7d770e2d2a7965)
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
293032eec4baa04374d62dd44de61e355296ad32 , < c3aa7b837920c844d5ae0dd3dbaeb465a461de40
(git)
Affected: 293032eec4baa04374d62dd44de61e355296ad32 , < 1c87b48a0ff040723f84a67b32892af7e6a3634f (git) Affected: 293032eec4baa04374d62dd44de61e355296ad32 , < 0cfe9c4838f1147713f6b5c02094cd4dc0c598fa (git) |
||
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CVE-2026-31389 (GCVE-0-2026-31389)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
spi: fix use-after-free on controller registration failure
Summary
In the Linux kernel, the following vulnerability has been resolved:
spi: fix use-after-free on controller registration failure
Make sure to deregister from driver core also in the unlikely event that
per-cpu statistics allocation fails during controller registration to
avoid use-after-free (of driver resources) and unclocked register
accesses.
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
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|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
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(git)
Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < 6bbd385b30c7fb6c7ee0669e9ada91490938c051 (git) Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < afe27c1f43aa57530011f419be6ddf71306565d2 (git) Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < 80f3e8cd2b4ad355b2ad2024cf423f6d183404f7 (git) Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < 23b51bad2eb8787aa74324cfccefb258515ae5ba (git) Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < 8634e05b08ead636e926022f4a98416e13440df9 (git) |
|||||||
|
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CVE-2026-23475 (GCVE-0-2026-23475)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
spi: fix statistics allocation
Summary
In the Linux kernel, the following vulnerability has been resolved:
spi: fix statistics allocation
The controller per-cpu statistics is not allocated until after the
controller has been registered with driver core, which leaves a window
where accessing the sysfs attributes can trigger a NULL-pointer
dereference.
Fix this by moving the statistics allocation to controller allocation
while tying its lifetime to that of the controller (rather than using
implicit devres).
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
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(git)
Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < f13100b1f5f111989f0750540a795fdef47492af (git) Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < df30056c78e8bead02d4be020199cabdbec0fef1 (git) Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < 378b295f67102eef78cf2c28105f60ae1dab5cc1 (git) Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < 118ce777d39f03cac99231196f820e4f998613a8 (git) Affected: 6598b91b5ac32bc756d7c3000a31f775d4ead1c4 , < dee0774bbb2abb172e9069ce5ffef579b12b3ae9 (git) |
|||||||
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CVE-2026-23474 (GCVE-0-2026-23474)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
mtd: Avoid boot crash in RedBoot partition table parser
Summary
In the Linux kernel, the following vulnerability has been resolved:
mtd: Avoid boot crash in RedBoot partition table parser
Given CONFIG_FORTIFY_SOURCE=y and a recent compiler,
commit 439a1bcac648 ("fortify: Use __builtin_dynamic_object_size() when
available") produces the warning below and an oops.
Searching for RedBoot partition table in 50000000.flash at offset 0x7e0000
------------[ cut here ]------------
WARNING: lib/string_helpers.c:1035 at 0xc029e04c, CPU#0: swapper/0/1
memcmp: detected buffer overflow: 15 byte read of buffer size 14
Modules linked in:
CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.19.0 #1 NONE
As Kees said, "'names' is pointing to the final 'namelen' many bytes
of the allocation ... 'namelen' could be basically any length at all.
This fortify warning looks legit to me -- this code used to be reading
beyond the end of the allocation."
Since the size of the dynamic allocation is calculated with strlen()
we can use strcmp() instead of memcmp() and remain within bounds.
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0b08be5aca212a99f8ba786fee4922feac08002c
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d8570211a2b1ec886a462daa0be4e9983ac768bb (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2025b2d1f9d5cad6ea6fe85654c6c41297c3130b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c4054ad2d8bff4e8e937cd4a1d1a04c1e8f77a2c (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 75a4d8cfe7784f909b3bd69325abac8e04ecb385 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8e2f8020270af7777d49c2e7132260983e4fc566 (git) |
|||||||
|
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CVE-2026-23473 (GCVE-0-2026-23473)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
io_uring/poll: fix multishot recv missing EOF on wakeup race
Summary
In the Linux kernel, the following vulnerability has been resolved:
io_uring/poll: fix multishot recv missing EOF on wakeup race
When a socket send and shutdown() happen back-to-back, both fire
wake-ups before the receiver's task_work has a chance to run. The first
wake gets poll ownership (poll_refs=1), and the second bumps it to 2.
When io_poll_check_events() runs, it calls io_poll_issue() which does a
recv that reads the data and returns IOU_RETRY. The loop then drains all
accumulated refs (atomic_sub_return(2) -> 0) and exits, even though only
the first event was consumed. Since the shutdown is a persistent state
change, no further wakeups will happen, and the multishot recv can hang
forever.
Check specifically for HUP in the poll loop, and ensure that another
loop is done to check for status if more than a single poll activation
is pending. This ensures we don't lose the shutdown event.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
dbc2564cfe0faff439dc46adb8c009589054ea46 , < 0f4ce79b8db7b040373fc664c8bc6c5fd74bd196
(git)
Affected: dbc2564cfe0faff439dc46adb8c009589054ea46 , < bf33554b6abf7e7faeadd8af1b82037ea755a6bb (git) Affected: dbc2564cfe0faff439dc46adb8c009589054ea46 , < a68ed2df72131447d131531a08fe4dfcf4fa4653 (git) |
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CVE-2026-23472 (GCVE-0-2026-23472)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
serial: core: fix infinite loop in handle_tx() for PORT_UNKNOWN
Summary
In the Linux kernel, the following vulnerability has been resolved:
serial: core: fix infinite loop in handle_tx() for PORT_UNKNOWN
uart_write_room() and uart_write() behave inconsistently when
xmit_buf is NULL (which happens for PORT_UNKNOWN ports that were
never properly initialized):
- uart_write_room() returns kfifo_avail() which can be > 0
- uart_write() checks xmit_buf and returns 0 if NULL
This inconsistency causes an infinite loop in drivers that rely on
tty_write_room() to determine if they can write:
while (tty_write_room(tty) > 0) {
written = tty->ops->write(...);
// written is always 0, loop never exits
}
For example, caif_serial's handle_tx() enters an infinite loop when
used with PORT_UNKNOWN serial ports, causing system hangs.
Fix by making uart_write_room() also check xmit_buf and return 0 if
it's NULL, consistent with uart_write().
Reproducer: https://gist.github.com/mrpre/d9a694cc0e19828ee3bc3b37983fde13
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < efe85a557186b7fe915572ae93a8f3f78bfd9a22
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < bc70f2b36cf474d5cc8ecbcaf57f3e326fdec67c (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 455ce986fa356ff43a43c0d363ba95fa152f21d5 (git) |
||
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CVE-2026-23471 (GCVE-0-2026-23471)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
drm: Fix use-after-free on framebuffers and property blobs when calling drm_dev_unplug
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm: Fix use-after-free on framebuffers and property blobs when calling drm_dev_unplug
When trying to do a rather aggressive test of igt's "xe_module_load
--r reload" with a full desktop environment and game running I noticed
a few OOPSes when dereferencing freed pointers, related to
framebuffers and property blobs after the compositor exits.
Solve this by guarding the freeing in drm_file with drm_dev_enter/exit,
and immediately put the references from struct drm_file objects during
drm_dev_unplug().
Related warnings for framebuffers on the subtest:
[ 739.713076] ------------[ cut here ]------------
WARN_ON(!list_empty(&dev->mode_config.fb_list))
[ 739.713079] WARNING: drivers/gpu/drm/drm_mode_config.c:584 at drm_mode_config_cleanup+0x30b/0x320 [drm], CPU#12: xe_module_load/13145
....
[ 739.713328] Call Trace:
[ 739.713330] <TASK>
[ 739.713335] ? intel_pmdemand_destroy_state+0x11/0x20 [xe]
[ 739.713574] ? intel_atomic_global_obj_cleanup+0xe4/0x1a0 [xe]
[ 739.713794] intel_display_driver_remove_noirq+0x51/0xb0 [xe]
[ 739.714041] xe_display_fini_early+0x33/0x50 [xe]
[ 739.714284] devm_action_release+0xf/0x20
[ 739.714294] devres_release_all+0xad/0xf0
[ 739.714301] device_unbind_cleanup+0x12/0xa0
[ 739.714305] device_release_driver_internal+0x1b7/0x210
[ 739.714311] device_driver_detach+0x14/0x20
[ 739.714315] unbind_store+0xa6/0xb0
[ 739.714319] drv_attr_store+0x21/0x30
[ 739.714322] sysfs_kf_write+0x48/0x60
[ 739.714328] kernfs_fop_write_iter+0x16b/0x240
[ 739.714333] vfs_write+0x266/0x520
[ 739.714341] ksys_write+0x72/0xe0
[ 739.714345] __x64_sys_write+0x19/0x20
[ 739.714347] x64_sys_call+0xa15/0xa30
[ 739.714355] do_syscall_64+0xd8/0xab0
[ 739.714361] entry_SYSCALL_64_after_hwframe+0x4b/0x53
and
[ 739.714459] ------------[ cut here ]------------
[ 739.714461] xe 0000:67:00.0: [drm] drm_WARN_ON(!list_empty(&fb->filp_head))
[ 739.714464] WARNING: drivers/gpu/drm/drm_framebuffer.c:833 at drm_framebuffer_free+0x6c/0x90 [drm], CPU#12: xe_module_load/13145
[ 739.714715] RIP: 0010:drm_framebuffer_free+0x7a/0x90 [drm]
...
[ 739.714869] Call Trace:
[ 739.714871] <TASK>
[ 739.714876] drm_mode_config_cleanup+0x26a/0x320 [drm]
[ 739.714998] ? __drm_printfn_seq_file+0x20/0x20 [drm]
[ 739.715115] ? drm_mode_config_cleanup+0x207/0x320 [drm]
[ 739.715235] intel_display_driver_remove_noirq+0x51/0xb0 [xe]
[ 739.715576] xe_display_fini_early+0x33/0x50 [xe]
[ 739.715821] devm_action_release+0xf/0x20
[ 739.715828] devres_release_all+0xad/0xf0
[ 739.715843] device_unbind_cleanup+0x12/0xa0
[ 739.715850] device_release_driver_internal+0x1b7/0x210
[ 739.715856] device_driver_detach+0x14/0x20
[ 739.715860] unbind_store+0xa6/0xb0
[ 739.715865] drv_attr_store+0x21/0x30
[ 739.715868] sysfs_kf_write+0x48/0x60
[ 739.715873] kernfs_fop_write_iter+0x16b/0x240
[ 739.715878] vfs_write+0x266/0x520
[ 739.715886] ksys_write+0x72/0xe0
[ 739.715890] __x64_sys_write+0x19/0x20
[ 739.715893] x64_sys_call+0xa15/0xa30
[ 739.715900] do_syscall_64+0xd8/0xab0
[ 739.715905] entry_SYSCALL_64_after_hwframe+0x4b/0x53
and then finally file close blows up:
[ 743.186530] Oops: general protection fault, probably for non-canonical address 0xdead000000000122: 0000 [#1] SMP
[ 743.186535] CPU: 3 UID: 1000 PID: 3453 Comm: kwin_wayland Tainted: G W 7.0.0-rc1-valkyria+ #110 PREEMPT_{RT,(lazy)}
[ 743.186537] Tainted: [W]=WARN
[ 743.186538] Hardware name: Gigabyte Technology Co., Ltd. X299 AORUS Gaming 3/X299 AORUS Gaming 3-CF, BIOS F8n 12/06/2021
[ 743.186539] RIP: 0010:drm_framebuffer_cleanup+0x55/0xc0 [drm]
[ 743.186588] Code: d8 72 73 0f b6 42 05 ff c3 39 c3 72 e8 49 8d bd 50 07 00 00 31 f6 e8 3a 80 d3 e1 49 8b 44 24 10 49 8d 7c 24 08 49 8b 54 24 08 <48> 3b 38 0f 85 95 7f 02 00 48 3b 7a 08 0f 85 8b 7f 02 00 48 89 42
[ 743.186589] RSP: 0018:ffffc900085e3cf8 EFLAGS: 00
---truncated---
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
bee330f3d67273a68dcb99f59480d59553c008b2 , < 54df178324b268c62f847381e2813a1b0f971384
(git)
Affected: bee330f3d67273a68dcb99f59480d59553c008b2 , < eec4d5758f33925e0bdb4a32b45d86a68afa4516 (git) Affected: bee330f3d67273a68dcb99f59480d59553c008b2 , < 7e3ec3bf4015156dcc5bafed13f26a587cc37f5c (git) Affected: bee330f3d67273a68dcb99f59480d59553c008b2 , < 074d06d3724ccab0c5bb779db594a82b6405e501 (git) Affected: bee330f3d67273a68dcb99f59480d59553c008b2 , < e493c135980f90c20308d1a98f2e0d1223951e94 (git) Affected: bee330f3d67273a68dcb99f59480d59553c008b2 , < 6bee098b91417654703e17eb5c1822c6dfd0c01d (git) |
|||||||
|
|||||||||
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Fix use-after-free on framebuffers and property blobs when calling drm_dev_unplug\n\nWhen trying to do a rather aggressive test of igt\u0027s \"xe_module_load\n--r reload\" with a full desktop environment and game running I noticed\na few OOPSes when dereferencing freed pointers, related to\nframebuffers and property blobs after the compositor exits.\n\nSolve this by guarding the freeing in drm_file with drm_dev_enter/exit,\nand immediately put the references from struct drm_file objects during\ndrm_dev_unplug().\n\nRelated warnings for framebuffers on the subtest:\n[ 739.713076] ------------[ cut here ]------------\n WARN_ON(!list_empty(\u0026dev-\u003emode_config.fb_list))\n[ 739.713079] WARNING: drivers/gpu/drm/drm_mode_config.c:584 at drm_mode_config_cleanup+0x30b/0x320 [drm], CPU#12: xe_module_load/13145\n....\n[ 739.713328] Call Trace:\n[ 739.713330] \u003cTASK\u003e\n[ 739.713335] ? intel_pmdemand_destroy_state+0x11/0x20 [xe]\n[ 739.713574] ? intel_atomic_global_obj_cleanup+0xe4/0x1a0 [xe]\n[ 739.713794] intel_display_driver_remove_noirq+0x51/0xb0 [xe]\n[ 739.714041] xe_display_fini_early+0x33/0x50 [xe]\n[ 739.714284] devm_action_release+0xf/0x20\n[ 739.714294] devres_release_all+0xad/0xf0\n[ 739.714301] device_unbind_cleanup+0x12/0xa0\n[ 739.714305] device_release_driver_internal+0x1b7/0x210\n[ 739.714311] device_driver_detach+0x14/0x20\n[ 739.714315] unbind_store+0xa6/0xb0\n[ 739.714319] drv_attr_store+0x21/0x30\n[ 739.714322] sysfs_kf_write+0x48/0x60\n[ 739.714328] kernfs_fop_write_iter+0x16b/0x240\n[ 739.714333] vfs_write+0x266/0x520\n[ 739.714341] ksys_write+0x72/0xe0\n[ 739.714345] __x64_sys_write+0x19/0x20\n[ 739.714347] x64_sys_call+0xa15/0xa30\n[ 739.714355] do_syscall_64+0xd8/0xab0\n[ 739.714361] entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\nand\n\n[ 739.714459] ------------[ cut here ]------------\n[ 739.714461] xe 0000:67:00.0: [drm] drm_WARN_ON(!list_empty(\u0026fb-\u003efilp_head))\n[ 739.714464] WARNING: drivers/gpu/drm/drm_framebuffer.c:833 at drm_framebuffer_free+0x6c/0x90 [drm], CPU#12: xe_module_load/13145\n[ 739.714715] RIP: 0010:drm_framebuffer_free+0x7a/0x90 [drm]\n...\n[ 739.714869] Call Trace:\n[ 739.714871] \u003cTASK\u003e\n[ 739.714876] drm_mode_config_cleanup+0x26a/0x320 [drm]\n[ 739.714998] ? __drm_printfn_seq_file+0x20/0x20 [drm]\n[ 739.715115] ? drm_mode_config_cleanup+0x207/0x320 [drm]\n[ 739.715235] intel_display_driver_remove_noirq+0x51/0xb0 [xe]\n[ 739.715576] xe_display_fini_early+0x33/0x50 [xe]\n[ 739.715821] devm_action_release+0xf/0x20\n[ 739.715828] devres_release_all+0xad/0xf0\n[ 739.715843] device_unbind_cleanup+0x12/0xa0\n[ 739.715850] device_release_driver_internal+0x1b7/0x210\n[ 739.715856] device_driver_detach+0x14/0x20\n[ 739.715860] unbind_store+0xa6/0xb0\n[ 739.715865] drv_attr_store+0x21/0x30\n[ 739.715868] sysfs_kf_write+0x48/0x60\n[ 739.715873] kernfs_fop_write_iter+0x16b/0x240\n[ 739.715878] vfs_write+0x266/0x520\n[ 739.715886] ksys_write+0x72/0xe0\n[ 739.715890] __x64_sys_write+0x19/0x20\n[ 739.715893] x64_sys_call+0xa15/0xa30\n[ 739.715900] do_syscall_64+0xd8/0xab0\n[ 739.715905] entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\nand then finally file close blows up:\n\n[ 743.186530] Oops: general protection fault, probably for non-canonical address 0xdead000000000122: 0000 [#1] SMP\n[ 743.186535] CPU: 3 UID: 1000 PID: 3453 Comm: kwin_wayland Tainted: G W 7.0.0-rc1-valkyria+ #110 PREEMPT_{RT,(lazy)}\n[ 743.186537] Tainted: [W]=WARN\n[ 743.186538] Hardware name: Gigabyte Technology Co., Ltd. X299 AORUS Gaming 3/X299 AORUS Gaming 3-CF, BIOS F8n 12/06/2021\n[ 743.186539] RIP: 0010:drm_framebuffer_cleanup+0x55/0xc0 [drm]\n[ 743.186588] Code: d8 72 73 0f b6 42 05 ff c3 39 c3 72 e8 49 8d bd 50 07 00 00 31 f6 e8 3a 80 d3 e1 49 8b 44 24 10 49 8d 7c 24 08 49 8b 54 24 08 \u003c48\u003e 3b 38 0f 85 95 7f 02 00 48 3b 7a 08 0f 85 8b 7f 02 00 48 89 42\n[ 743.186589] RSP: 0018:ffffc900085e3cf8 EFLAGS: 00\n---truncated---"
}
],
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"url": "https://git.kernel.org/stable/c/eec4d5758f33925e0bdb4a32b45d86a68afa4516"
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"url": "https://git.kernel.org/stable/c/6bee098b91417654703e17eb5c1822c6dfd0c01d"
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"title": "drm: Fix use-after-free on framebuffers and property blobs when calling drm_dev_unplug",
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CVE-2026-23470 (GCVE-0-2026-23470)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
drm/imagination: Fix deadlock in soft reset sequence
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/imagination: Fix deadlock in soft reset sequence
The soft reset sequence is currently executed from the threaded IRQ
handler, hence it cannot call disable_irq() which internally waits
for IRQ handlers, i.e. itself, to complete.
Use disable_irq_nosync() during a soft reset instead.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < f99e8b813ae5ce8ffd62c33f5753bf0a008af4b1
(git)
Affected: cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < 9497b1f309436971726e229aa6026954ea7c28e9 (git) Affected: cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < 6f39b48a2d3b1fe83f99477250cd0cd67ca1e1c6 (git) Affected: cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < a55c2a5c8d680156495b7b1e2a9f5a3e313ba524 (git) |
||
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CVE-2026-23469 (GCVE-0-2026-23469)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
drm/imagination: Synchronize interrupts before suspending the GPU
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/imagination: Synchronize interrupts before suspending the GPU
The runtime PM suspend callback doesn't know whether the IRQ handler is
in progress on a different CPU core and doesn't wait for it to finish.
Depending on timing, the IRQ handler could be running while the GPU is
suspended, leading to kernel crashes when trying to access GPU
registers. See example signature below.
In a power off sequence initiated by the runtime PM suspend callback,
wait for any IRQ handlers in progress on other CPU cores to finish, by
calling synchronize_irq().
At the same time, remove the runtime PM resume/put calls in the threaded
IRQ handler. On top of not being the right approach to begin with, and
being at the wrong place as they should have wrapped all GPU register
accesses, the driver would hit a deadlock between synchronize_irq()
being called from a runtime PM suspend callback, holding the device
power lock, and the resume callback requiring the same.
Example crash signature on a TI AM68 SK platform:
[ 337.241218] SError Interrupt on CPU0, code 0x00000000bf000000 -- SError
[ 337.241239] CPU: 0 UID: 0 PID: 112 Comm: irq/234-gpu Tainted: G M 6.17.7-B2C-00005-g9c7bbe4ea16c #2 PREEMPT
[ 337.241246] Tainted: [M]=MACHINE_CHECK
[ 337.241249] Hardware name: Texas Instruments AM68 SK (DT)
[ 337.241252] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 337.241256] pc : pvr_riscv_irq_pending+0xc/0x24
[ 337.241277] lr : pvr_device_irq_thread_handler+0x64/0x310
[ 337.241282] sp : ffff800085b0bd30
[ 337.241284] x29: ffff800085b0bd50 x28: ffff0008070d9eab x27: ffff800083a5ce10
[ 337.241291] x26: ffff000806e48f80 x25: ffff0008070d9eac x24: 0000000000000000
[ 337.241296] x23: ffff0008068e9bf0 x22: ffff0008068e9bd0 x21: ffff800085b0bd30
[ 337.241301] x20: ffff0008070d9e00 x19: ffff0008068e9000 x18: 0000000000000001
[ 337.241305] x17: 637365645f656c70 x16: 0000000000000000 x15: ffff000b7df9ff40
[ 337.241310] x14: 0000a585fe3c0d0e x13: 000000999704f060 x12: 000000000002771a
[ 337.241314] x11: 00000000000000c0 x10: 0000000000000af0 x9 : ffff800085b0bd00
[ 337.241318] x8 : ffff0008071175d0 x7 : 000000000000b955 x6 : 0000000000000003
[ 337.241323] x5 : 0000000000000000 x4 : 0000000000000002 x3 : 0000000000000000
[ 337.241327] x2 : ffff800080e39d20 x1 : ffff800080e3fc48 x0 : 0000000000000000
[ 337.241333] Kernel panic - not syncing: Asynchronous SError Interrupt
[ 337.241337] CPU: 0 UID: 0 PID: 112 Comm: irq/234-gpu Tainted: G M 6.17.7-B2C-00005-g9c7bbe4ea16c #2 PREEMPT
[ 337.241342] Tainted: [M]=MACHINE_CHECK
[ 337.241343] Hardware name: Texas Instruments AM68 SK (DT)
[ 337.241345] Call trace:
[ 337.241348] show_stack+0x18/0x24 (C)
[ 337.241357] dump_stack_lvl+0x60/0x80
[ 337.241364] dump_stack+0x18/0x24
[ 337.241368] vpanic+0x124/0x2ec
[ 337.241373] abort+0x0/0x4
[ 337.241377] add_taint+0x0/0xbc
[ 337.241384] arm64_serror_panic+0x70/0x80
[ 337.241389] do_serror+0x3c/0x74
[ 337.241392] el1h_64_error_handler+0x30/0x48
[ 337.241400] el1h_64_error+0x6c/0x70
[ 337.241404] pvr_riscv_irq_pending+0xc/0x24 (P)
[ 337.241410] irq_thread_fn+0x2c/0xb0
[ 337.241416] irq_thread+0x170/0x334
[ 337.241421] kthread+0x12c/0x210
[ 337.241428] ret_from_fork+0x10/0x20
[ 337.241434] SMP: stopping secondary CPUs
[ 337.241451] Kernel Offset: disabled
[ 337.241453] CPU features: 0x040000,02002800,20002001,0400421b
[ 337.241456] Memory Limit: none
[ 337.457921] ---[ end Kernel panic - not syncing: Asynchronous SError Interrupt ]---
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < 772f3653eef50ea7cf721b05d8e275f93bc460f3
(git)
Affected: cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < 8e0c15e426a056b9fb604cf87a1dfdec4d61e407 (git) Affected: cc1aeedb98ad347c06ff59e991b2f94dfb4c565d , < 2d7f05cddf4c268cc36256a2476946041dbdd36d (git) |
||
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: Synchronize interrupts before suspending the GPU\n\nThe runtime PM suspend callback doesn\u0027t know whether the IRQ handler is\nin progress on a different CPU core and doesn\u0027t wait for it to finish.\n\nDepending on timing, the IRQ handler could be running while the GPU is\nsuspended, leading to kernel crashes when trying to access GPU\nregisters. See example signature below.\n\nIn a power off sequence initiated by the runtime PM suspend callback,\nwait for any IRQ handlers in progress on other CPU cores to finish, by\ncalling synchronize_irq().\n\nAt the same time, remove the runtime PM resume/put calls in the threaded\nIRQ handler. On top of not being the right approach to begin with, and\nbeing at the wrong place as they should have wrapped all GPU register\naccesses, the driver would hit a deadlock between synchronize_irq()\nbeing called from a runtime PM suspend callback, holding the device\npower lock, and the resume callback requiring the same.\n\nExample crash signature on a TI AM68 SK platform:\n\n [ 337.241218] SError Interrupt on CPU0, code 0x00000000bf000000 -- SError\n [ 337.241239] CPU: 0 UID: 0 PID: 112 Comm: irq/234-gpu Tainted: G M 6.17.7-B2C-00005-g9c7bbe4ea16c #2 PREEMPT\n [ 337.241246] Tainted: [M]=MACHINE_CHECK\n [ 337.241249] Hardware name: Texas Instruments AM68 SK (DT)\n [ 337.241252] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n [ 337.241256] pc : pvr_riscv_irq_pending+0xc/0x24\n [ 337.241277] lr : pvr_device_irq_thread_handler+0x64/0x310\n [ 337.241282] sp : ffff800085b0bd30\n [ 337.241284] x29: ffff800085b0bd50 x28: ffff0008070d9eab x27: ffff800083a5ce10\n [ 337.241291] x26: ffff000806e48f80 x25: ffff0008070d9eac x24: 0000000000000000\n [ 337.241296] x23: ffff0008068e9bf0 x22: ffff0008068e9bd0 x21: ffff800085b0bd30\n [ 337.241301] x20: ffff0008070d9e00 x19: ffff0008068e9000 x18: 0000000000000001\n [ 337.241305] x17: 637365645f656c70 x16: 0000000000000000 x15: ffff000b7df9ff40\n [ 337.241310] x14: 0000a585fe3c0d0e x13: 000000999704f060 x12: 000000000002771a\n [ 337.241314] x11: 00000000000000c0 x10: 0000000000000af0 x9 : ffff800085b0bd00\n [ 337.241318] x8 : ffff0008071175d0 x7 : 000000000000b955 x6 : 0000000000000003\n [ 337.241323] x5 : 0000000000000000 x4 : 0000000000000002 x3 : 0000000000000000\n [ 337.241327] x2 : ffff800080e39d20 x1 : ffff800080e3fc48 x0 : 0000000000000000\n [ 337.241333] Kernel panic - not syncing: Asynchronous SError Interrupt\n [ 337.241337] CPU: 0 UID: 0 PID: 112 Comm: irq/234-gpu Tainted: G M 6.17.7-B2C-00005-g9c7bbe4ea16c #2 PREEMPT\n [ 337.241342] Tainted: [M]=MACHINE_CHECK\n [ 337.241343] Hardware name: Texas Instruments AM68 SK (DT)\n [ 337.241345] Call trace:\n [ 337.241348] show_stack+0x18/0x24 (C)\n [ 337.241357] dump_stack_lvl+0x60/0x80\n [ 337.241364] dump_stack+0x18/0x24\n [ 337.241368] vpanic+0x124/0x2ec\n [ 337.241373] abort+0x0/0x4\n [ 337.241377] add_taint+0x0/0xbc\n [ 337.241384] arm64_serror_panic+0x70/0x80\n [ 337.241389] do_serror+0x3c/0x74\n [ 337.241392] el1h_64_error_handler+0x30/0x48\n [ 337.241400] el1h_64_error+0x6c/0x70\n [ 337.241404] pvr_riscv_irq_pending+0xc/0x24 (P)\n [ 337.241410] irq_thread_fn+0x2c/0xb0\n [ 337.241416] irq_thread+0x170/0x334\n [ 337.241421] kthread+0x12c/0x210\n [ 337.241428] ret_from_fork+0x10/0x20\n [ 337.241434] SMP: stopping secondary CPUs\n [ 337.241451] Kernel Offset: disabled\n [ 337.241453] CPU features: 0x040000,02002800,20002001,0400421b\n [ 337.241456] Memory Limit: none\n [ 337.457921] ---[ end Kernel panic - not syncing: Asynchronous SError Interrupt ]---"
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CVE-2026-23468 (GCVE-0-2026-23468)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
drm/amdgpu: Limit BO list entry count to prevent resource exhaustion
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: Limit BO list entry count to prevent resource exhaustion
Userspace can pass an arbitrary number of BO list entries via the
bo_number field. Although the previous multiplication overflow check
prevents out-of-bounds allocation, a large number of entries could still
cause excessive memory allocation (up to potentially gigabytes) and
unnecessarily long list processing times.
Introduce a hard limit of 128k entries per BO list, which is more than
sufficient for any realistic use case (e.g., a single list containing all
buffers in a large scene). This prevents memory exhaustion attacks and
ensures predictable performance.
Return -EINVAL if the requested entry count exceeds the limit
(cherry picked from commit 688b87d39e0aa8135105b40dc167d74b5ada5332)
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5ce4a38e6c2488949e373d5066303f9c128db614
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f462624a6e4b5f1ec2664c2c53e408b2f4fb53e9 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6270b1a5dab94665d7adce3dc78bc9066ed28bdd (git) |
||
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CVE-2026-23467 (GCVE-0-2026-23467)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
drm/i915/dmc: Fix an unlikely NULL pointer deference at probe
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/i915/dmc: Fix an unlikely NULL pointer deference at probe
intel_dmc_update_dc6_allowed_count() oopses when DMC hasn't been
initialized, and dmc is thus NULL.
That would be the case when the call path is
intel_power_domains_init_hw() -> {skl,bxt,icl}_display_core_init() ->
gen9_set_dc_state() -> intel_dmc_update_dc6_allowed_count(), as
intel_power_domains_init_hw() is called *before* intel_dmc_init().
However, gen9_set_dc_state() calls intel_dmc_update_dc6_allowed_count()
conditionally, depending on the current and target DC states. At probe,
the target is disabled, but if DC6 is enabled, the function is called,
and an oops follows. Apparently it's quite unlikely that DC6 is enabled
at probe, as we haven't seen this failure mode before.
It is also strange to have DC6 enabled at boot, since that would require
the DMC firmware (loaded by BIOS); the BIOS loading the DMC firmware and
the driver stopping / reprogramming the firmware is a poorly specified
sequence and as such unlikely an intentional BIOS behaviour. It's more
likely that BIOS is leaving an unintentionally enabled DC6 HW state
behind (without actually loading the required DMC firmware for this).
The tracking of the DC6 allowed counter only works if starting /
stopping the counter depends on the _SW_ DC6 state vs. the current _HW_
DC6 state (since stopping the counter requires the DC5 counter captured
when the counter was started). Thus, using the HW DC6 state is incorrect
and it also leads to the above oops. Fix both issues by using the SW DC6
state for the tracking.
This is v2 of the fix originally sent by Jani, updated based on the
first Link: discussion below.
(cherry picked from commit 2344b93af8eb5da5d496b4e0529d35f0f559eaf0)
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
88c1f9a4d36de61f87cc52aac670020b13d1ccaa , < 0b35d11fbbcfd1079c8489282a341944228835e3
(git)
Affected: 88c1f9a4d36de61f87cc52aac670020b13d1ccaa , < 631317825d44283abfe7a8374f13a76ce2032bb8 (git) Affected: 88c1f9a4d36de61f87cc52aac670020b13d1ccaa , < ac57eb3b7d2ad649025b5a0fa207315f755ac4f6 (git) |
||
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CVE-2026-23466 (GCVE-0-2026-23466)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
drm/xe: Open-code GGTT MMIO access protection
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Open-code GGTT MMIO access protection
GGTT MMIO access is currently protected by hotplug (drm_dev_enter),
which works correctly when the driver loads successfully and is later
unbound or unloaded. However, if driver load fails, this protection is
insufficient because drm_dev_unplug() is never called.
Additionally, devm release functions cannot guarantee that all BOs with
GGTT mappings are destroyed before the GGTT MMIO region is removed, as
some BOs may be freed asynchronously by worker threads.
To address this, introduce an open-coded flag, protected by the GGTT
lock, that guards GGTT MMIO access. The flag is cleared during the
dev_fini_ggtt devm release function to ensure MMIO access is disabled
once teardown begins.
(cherry picked from commit 4f3a998a173b4325c2efd90bdadc6ccd3ad9a431)
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
919bb54e989c1edef87e9797be125c94c450fc65 , < e2b424aadecb640f9e037b2891191cf8fd4c64cf
(git)
Affected: 919bb54e989c1edef87e9797be125c94c450fc65 , < 1e9e2640d870d4837bcfdc220cb2c99ae5ee119f (git) Affected: 919bb54e989c1edef87e9797be125c94c450fc65 , < 76326dc06d8793c2c81c31cc0115dbc348de2f88 (git) Affected: 919bb54e989c1edef87e9797be125c94c450fc65 , < 01f2557aa684e514005541e71a3d01f4cd45c170 (git) |
||
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CVE-2026-23465 (GCVE-0-2026-23465)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
btrfs: log new dentries when logging parent dir of a conflicting inode
Summary
In the Linux kernel, the following vulnerability has been resolved:
btrfs: log new dentries when logging parent dir of a conflicting inode
If we log the parent directory of a conflicting inode, we are not logging
the new dentries of the directory, so when we finish we have the parent
directory's inode marked as logged but we did not log its new dentries.
As a consequence if the parent directory is explicitly fsynced later and
it does not have any new changes since we logged it, the fsync is a no-op
and after a power failure the new dentries are missing.
Example scenario:
$ mkdir foo
$ sync
$rmdir foo
$ mkdir dir1
$ mkdir dir2
# A file with the same name and parent as the directory we just deleted
# and was persisted in a past transaction. So the deleted directory's
# inode is a conflicting inode of this new file's inode.
$ touch foo
$ ln foo dir2/link
# The fsync on dir2 will log the parent directory (".") because the
# conflicting inode (deleted directory) does not exists anymore, but it
# it does not log its new dentries (dir1).
$ xfs_io -c "fsync" dir2
# This fsync on the parent directory is no-op, since the previous fsync
# logged it (but without logging its new dentries).
$ xfs_io -c "fsync" .
<power failure>
# After log replay dir1 is missing.
Fix this by ensuring we log new dir dentries whenever we log the parent
directory of a no longer existing conflicting inode.
A test case for fstests will follow soon.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
a3baaf0d786e22fc86295fda9c58ba0dee07599f , < 56e72c8b02d982be775d9df025357c152383ee84
(git)
Affected: a3baaf0d786e22fc86295fda9c58ba0dee07599f , < f556b1e09d054e31f464c0fd37280c2b5a393fee (git) Affected: a3baaf0d786e22fc86295fda9c58ba0dee07599f , < 1cf30c73602c69d750c9345c47f2c0e9d0cfb578 (git) Affected: a3baaf0d786e22fc86295fda9c58ba0dee07599f , < 6f5a51969b1deb79aefd2194b48fe7e78e72ff7e (git) Affected: a3baaf0d786e22fc86295fda9c58ba0dee07599f , < 9573a365ff9ff45da9222d3fe63695ce562beb24 (git) |
||
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CVE-2026-23464 (GCVE-0-2026-23464)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
soc: microchip: mpfs: Fix memory leak in mpfs_sys_controller_probe()
Summary
In the Linux kernel, the following vulnerability has been resolved:
soc: microchip: mpfs: Fix memory leak in mpfs_sys_controller_probe()
In mpfs_sys_controller_probe(), if of_get_mtd_device_by_node() fails,
the function returns immediately without freeing the allocated memory
for sys_controller, leading to a memory leak.
Fix this by jumping to the out_free label to ensure the memory is
properly freed.
Also, consolidate the error handling for the mbox_request_channel()
failure case to use the same label.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
742aa6c563d29c367edbf0ef7236a7a853ed9be4 , < da4b44c42f40501db35f5d0a6243708a061490a0
(git)
Affected: 742aa6c563d29c367edbf0ef7236a7a853ed9be4 , < e3dd5cffba07de6574165a72851471cd42cc6d15 (git) Affected: 742aa6c563d29c367edbf0ef7236a7a853ed9be4 , < 17c84fb7cf3971cc621646185d785670e9530ca1 (git) Affected: 742aa6c563d29c367edbf0ef7236a7a853ed9be4 , < 5a741f8cc6fe62542f955cd8d24933a1b6589cbd (git) |
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CVE-2026-23463 (GCVE-0-2026-23463)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
soc: fsl: qbman: fix race condition in qman_destroy_fq
Summary
In the Linux kernel, the following vulnerability has been resolved:
soc: fsl: qbman: fix race condition in qman_destroy_fq
When QMAN_FQ_FLAG_DYNAMIC_FQID is set, there's a race condition between
fq_table[fq->idx] state and freeing/allocating from the pool and
WARN_ON(fq_table[fq->idx]) in qman_create_fq() gets triggered.
Indeed, we can have:
Thread A Thread B
qman_destroy_fq() qman_create_fq()
qman_release_fqid()
qman_shutdown_fq()
gen_pool_free()
-- At this point, the fqid is available again --
qman_alloc_fqid()
-- so, we can get the just-freed fqid in thread B --
fq->fqid = fqid;
fq->idx = fqid * 2;
WARN_ON(fq_table[fq->idx]);
fq_table[fq->idx] = fq;
fq_table[fq->idx] = NULL;
And adding some logs between qman_release_fqid() and
fq_table[fq->idx] = NULL makes the WARN_ON() trigger a lot more.
To prevent that, ensure that fq_table[fq->idx] is set to NULL before
gen_pool_free() is called by using smp_wmb().
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
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Affected:
c535e923bb97a4b361e89a6383693482057f8b0c , < 9e3d47904b8153c8c3ad2f9b66d5008aad677aa8
(git)
Affected: c535e923bb97a4b361e89a6383693482057f8b0c , < d21923a8059fa896bfef016f55dd769299335cb4 (git) Affected: c535e923bb97a4b361e89a6383693482057f8b0c , < 751f60bd48edaf03f9d84ab09e5ce6705757d50f (git) Affected: c535e923bb97a4b361e89a6383693482057f8b0c , < 85dbbf7dc88b0a54f2e334daedf6f3f31fd004fa (git) Affected: c535e923bb97a4b361e89a6383693482057f8b0c , < 265e56714635c5dd1e5964bfd97fa6e73f62cde5 (git) Affected: c535e923bb97a4b361e89a6383693482057f8b0c , < 014077044e874e270ec480515edbc1cadb976cf2 (git) |
|||||||
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CVE-2026-23462 (GCVE-0-2026-23462)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-03 15:15
VLAI?
Title
Bluetooth: HIDP: Fix possible UAF
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: HIDP: Fix possible UAF
This fixes the following trace caused by not dropping l2cap_conn
reference when user->remove callback is called:
[ 97.809249] l2cap_conn_free: freeing conn ffff88810a171c00
[ 97.809907] CPU: 1 UID: 0 PID: 1419 Comm: repro_standalon Not tainted 7.0.0-rc1-dirty #14 PREEMPT(lazy)
[ 97.809935] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014
[ 97.809947] Call Trace:
[ 97.809954] <TASK>
[ 97.809961] dump_stack_lvl (lib/dump_stack.c:122)
[ 97.809990] l2cap_conn_free (net/bluetooth/l2cap_core.c:1808)
[ 97.810017] l2cap_conn_del (./include/linux/kref.h:66 net/bluetooth/l2cap_core.c:1821 net/bluetooth/l2cap_core.c:1798)
[ 97.810055] l2cap_disconn_cfm (net/bluetooth/l2cap_core.c:7347 (discriminator 1) net/bluetooth/l2cap_core.c:7340 (discriminator 1))
[ 97.810086] ? __pfx_l2cap_disconn_cfm (net/bluetooth/l2cap_core.c:7341)
[ 97.810117] hci_conn_hash_flush (./include/net/bluetooth/hci_core.h:2152 (discriminator 2) net/bluetooth/hci_conn.c:2644 (discriminator 2))
[ 97.810148] hci_dev_close_sync (net/bluetooth/hci_sync.c:5360)
[ 97.810180] ? __pfx_hci_dev_close_sync (net/bluetooth/hci_sync.c:5285)
[ 97.810212] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)
[ 97.810242] ? up_write (./arch/x86/include/asm/atomic64_64.h:87 (discriminator 5) ./include/linux/atomic/atomic-arch-fallback.h:2852 (discriminator 5) ./include/linux/atomic/atomic-long.h:268 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:3391 (discriminator 5) kernel/locking/rwsem.c:1385 (discriminator 5) kernel/locking/rwsem.c:1643 (discriminator 5))
[ 97.810267] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)
[ 97.810290] ? rcu_is_watching (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/context_tracking.h:128 kernel/rcu/tree.c:752)
[ 97.810320] hci_unregister_dev (net/bluetooth/hci_core.c:504 net/bluetooth/hci_core.c:2716)
[ 97.810346] vhci_release (drivers/bluetooth/hci_vhci.c:691)
[ 97.810375] ? __pfx_vhci_release (drivers/bluetooth/hci_vhci.c:678)
[ 97.810404] __fput (fs/file_table.c:470)
[ 97.810430] task_work_run (kernel/task_work.c:235)
[ 97.810451] ? __pfx_task_work_run (kernel/task_work.c:201)
[ 97.810472] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)
[ 97.810495] ? do_raw_spin_unlock (./include/asm-generic/qspinlock.h:128 (discriminator 5) kernel/locking/spinlock_debug.c:142 (discriminator 5))
[ 97.810527] do_exit (kernel/exit.c:972)
[ 97.810547] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)
[ 97.810574] ? __pfx_do_exit (kernel/exit.c:897)
[ 97.810594] ? lock_acquire (kernel/locking/lockdep.c:470 (discriminator 6) kernel/locking/lockdep.c:5870 (discriminator 6) kernel/locking/lockdep.c:5825 (discriminator 6))
[ 97.810616] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)
[ 97.810639] ? do_raw_spin_lock (kernel/locking/spinlock_debug.c:95 (discriminator 4) kernel/locking/spinlock_debug.c:118 (discriminator 4))
[ 97.810664] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)
[ 97.810688] ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[ 97.810721] do_group_exit (kernel/exit.c:1093)
[ 97.810745] get_signal (kernel/signal.c:3007 (discriminator 1))
[ 97.810772] ? security_file_permission (./arch/x86/include/asm/jump_label.h:37 security/security.c:2366)
[ 97.810803] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)
[ 97.810826] ? vfs_read (fs/read_write.c:555)
[ 97.810854] ? __pfx_get_signal (kernel/signal.c:2800)
[ 97.810880] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)
[ 97.810905] ? __pfx_vfs_read (fs/read_write.c:555)
[ 97.810932] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)
[ 97.810960] arch_do_signal_or_restart (arch/
---truncated---
Severity ?
No CVSS data available.
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
b4f34d8d9d26b2428fa7cf7c8f97690a297978e6 , < 21a47a119f33df9bb157326846390d7e8e1b45ba
(git)
Affected: b4f34d8d9d26b2428fa7cf7c8f97690a297978e6 , < 45ebe5b900200ac3e01f3470506a44a447825721 (git) Affected: b4f34d8d9d26b2428fa7cf7c8f97690a297978e6 , < 7c805b7d1e580eececcc92470292e3dbc42bc3f5 (git) Affected: b4f34d8d9d26b2428fa7cf7c8f97690a297978e6 , < f8b6ed2f06d3baa44f347a0fa2af52433f386463 (git) Affected: b4f34d8d9d26b2428fa7cf7c8f97690a297978e6 , < 4d37fa7582aa960ba23e10a7a2596a29f37ad281 (git) Affected: b4f34d8d9d26b2428fa7cf7c8f97690a297978e6 , < dbf666e4fc9bdd975a61bf682b3f75cb0145eedd (git) |
|||||||
|
|||||||||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/bluetooth/hidp/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "21a47a119f33df9bb157326846390d7e8e1b45ba",
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"versionType": "git"
},
{
"lessThan": "45ebe5b900200ac3e01f3470506a44a447825721",
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"versionType": "git"
},
{
"lessThan": "7c805b7d1e580eececcc92470292e3dbc42bc3f5",
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"versionType": "git"
},
{
"lessThan": "f8b6ed2f06d3baa44f347a0fa2af52433f386463",
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"versionType": "git"
},
{
"lessThan": "4d37fa7582aa960ba23e10a7a2596a29f37ad281",
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"versionType": "git"
},
{
"lessThan": "dbf666e4fc9bdd975a61bf682b3f75cb0145eedd",
"status": "affected",
"version": "b4f34d8d9d26b2428fa7cf7c8f97690a297978e6",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/bluetooth/hidp/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.10"
},
{
"lessThan": "3.10",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.78",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.20",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0-rc5",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.167",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.130",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.78",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.20",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19.10",
"versionStartIncluding": "3.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0-rc5",
"versionStartIncluding": "3.10",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: HIDP: Fix possible UAF\n\nThis fixes the following trace caused by not dropping l2cap_conn\nreference when user-\u003eremove callback is called:\n\n[ 97.809249] l2cap_conn_free: freeing conn ffff88810a171c00\n[ 97.809907] CPU: 1 UID: 0 PID: 1419 Comm: repro_standalon Not tainted 7.0.0-rc1-dirty #14 PREEMPT(lazy)\n[ 97.809935] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-debian-1.17.0-1 04/01/2014\n[ 97.809947] Call Trace:\n[ 97.809954] \u003cTASK\u003e\n[ 97.809961] dump_stack_lvl (lib/dump_stack.c:122)\n[ 97.809990] l2cap_conn_free (net/bluetooth/l2cap_core.c:1808)\n[ 97.810017] l2cap_conn_del (./include/linux/kref.h:66 net/bluetooth/l2cap_core.c:1821 net/bluetooth/l2cap_core.c:1798)\n[ 97.810055] l2cap_disconn_cfm (net/bluetooth/l2cap_core.c:7347 (discriminator 1) net/bluetooth/l2cap_core.c:7340 (discriminator 1))\n[ 97.810086] ? __pfx_l2cap_disconn_cfm (net/bluetooth/l2cap_core.c:7341)\n[ 97.810117] hci_conn_hash_flush (./include/net/bluetooth/hci_core.h:2152 (discriminator 2) net/bluetooth/hci_conn.c:2644 (discriminator 2))\n[ 97.810148] hci_dev_close_sync (net/bluetooth/hci_sync.c:5360)\n[ 97.810180] ? __pfx_hci_dev_close_sync (net/bluetooth/hci_sync.c:5285)\n[ 97.810212] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[ 97.810242] ? up_write (./arch/x86/include/asm/atomic64_64.h:87 (discriminator 5) ./include/linux/atomic/atomic-arch-fallback.h:2852 (discriminator 5) ./include/linux/atomic/atomic-long.h:268 (discriminator 5) ./include/linux/atomic/atomic-instrumented.h:3391 (discriminator 5) kernel/locking/rwsem.c:1385 (discriminator 5) kernel/locking/rwsem.c:1643 (discriminator 5))\n[ 97.810267] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[ 97.810290] ? rcu_is_watching (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/context_tracking.h:128 kernel/rcu/tree.c:752)\n[ 97.810320] hci_unregister_dev (net/bluetooth/hci_core.c:504 net/bluetooth/hci_core.c:2716)\n[ 97.810346] vhci_release (drivers/bluetooth/hci_vhci.c:691)\n[ 97.810375] ? __pfx_vhci_release (drivers/bluetooth/hci_vhci.c:678)\n[ 97.810404] __fput (fs/file_table.c:470)\n[ 97.810430] task_work_run (kernel/task_work.c:235)\n[ 97.810451] ? __pfx_task_work_run (kernel/task_work.c:201)\n[ 97.810472] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[ 97.810495] ? do_raw_spin_unlock (./include/asm-generic/qspinlock.h:128 (discriminator 5) kernel/locking/spinlock_debug.c:142 (discriminator 5))\n[ 97.810527] do_exit (kernel/exit.c:972)\n[ 97.810547] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[ 97.810574] ? __pfx_do_exit (kernel/exit.c:897)\n[ 97.810594] ? lock_acquire (kernel/locking/lockdep.c:470 (discriminator 6) kernel/locking/lockdep.c:5870 (discriminator 6) kernel/locking/lockdep.c:5825 (discriminator 6))\n[ 97.810616] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[ 97.810639] ? do_raw_spin_lock (kernel/locking/spinlock_debug.c:95 (discriminator 4) kernel/locking/spinlock_debug.c:118 (discriminator 4))\n[ 97.810664] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[ 97.810688] ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))\n[ 97.810721] do_group_exit (kernel/exit.c:1093)\n[ 97.810745] get_signal (kernel/signal.c:3007 (discriminator 1))\n[ 97.810772] ? security_file_permission (./arch/x86/include/asm/jump_label.h:37 security/security.c:2366)\n[ 97.810803] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[ 97.810826] ? vfs_read (fs/read_write.c:555)\n[ 97.810854] ? __pfx_get_signal (kernel/signal.c:2800)\n[ 97.810880] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[ 97.810905] ? __pfx_vfs_read (fs/read_write.c:555)\n[ 97.810932] ? srso_alias_return_thunk (arch/x86/lib/retpoline.S:221)\n[ 97.810960] arch_do_signal_or_restart (arch/\n---truncated---"
}
],
"providerMetadata": {
"dateUpdated": "2026-04-03T15:15:41.718Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/21a47a119f33df9bb157326846390d7e8e1b45ba"
},
{
"url": "https://git.kernel.org/stable/c/45ebe5b900200ac3e01f3470506a44a447825721"
},
{
"url": "https://git.kernel.org/stable/c/7c805b7d1e580eececcc92470292e3dbc42bc3f5"
},
{
"url": "https://git.kernel.org/stable/c/f8b6ed2f06d3baa44f347a0fa2af52433f386463"
},
{
"url": "https://git.kernel.org/stable/c/4d37fa7582aa960ba23e10a7a2596a29f37ad281"
},
{
"url": "https://git.kernel.org/stable/c/dbf666e4fc9bdd975a61bf682b3f75cb0145eedd"
}
],
"title": "Bluetooth: HIDP: Fix possible UAF",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-23462",
"datePublished": "2026-04-03T15:15:41.718Z",
"dateReserved": "2026-01-13T15:37:46.021Z",
"dateUpdated": "2026-04-03T15:15:41.718Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}