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rlsa-2026:67470
Vulnerability from osv_rocky
Published
2026-09-16 18:04
Modified
2026-09-17 00:14
Summary
Important: kernel security, bug fix, and enhancement update
Details
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
-
kernel: vhost: move vdpa group bound check to vhost_vdpa (CVE-2026-43248)
-
kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015)
-
kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (CVE-2026-63923)
-
kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change (CVE-2026-68143)
-
kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)
-
kernel: octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF (CVE-2026-72045)
-
kernel: scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer (CVE-2026-74556)
Bug Fix(es) and Enhancement(s):
- gfs2: bufdata leaks [rhel-9.8.z] (JIRA:Rocky Linux-178223)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Severity
7.8 (High)
References
{
"affected": [
{
"package": {
"ecosystem": "Rocky Linux:9",
"name": "kernel",
"purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-9\u0026epoch=0"
},
"ranges": [
{
"database_specific": {
"yum_repository": "BaseOS"
},
"events": [
{
"introduced": "0"
},
{
"fixed": "0:5.14.0-687.48.1.el9_8"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [
{
"name": "Rocky Enterprise Software Foundation"
},
{
"name": "Red Hat"
}
],
"database_specific": {
"license": "CC-BY-4.0",
"license_url": "https://creativecommons.org/licenses/by/4.0/",
"source_advisory": "RHSA-2026:67470"
},
"details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: vhost: move vdpa group bound check to vhost_vdpa (CVE-2026-43248)\n\n* kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015)\n\n* kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (CVE-2026-63923)\n\n* kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change (CVE-2026-68143)\n\n* kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)\n\n* kernel: octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF (CVE-2026-72045)\n\n* kernel: scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer (CVE-2026-74556)\n\nBug Fix(es) and Enhancement(s):\n\n* gfs2: bufdata leaks [rhel-9.8.z] (JIRA:Rocky Linux-178223)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
"id": "RLSA-2026:67470",
"modified": "2026-09-17T00:14:23.704527Z",
"published": "2026-09-16T18:04:51.734663Z",
"references": [
{
"type": "ADVISORY",
"url": "https://errata.rockylinux.org/RLSA-2026:67470"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467084"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502380"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502418"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513218"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513353"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516639"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517010"
},
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2026:67470"
}
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Important: kernel security, bug fix, and enhancement update",
"upstream": [
"CVE-2026-43248",
"CVE-2026-63923",
"CVE-2026-64015",
"CVE-2026-68143",
"CVE-2026-68294",
"CVE-2026-72045",
"CVE-2026-74556"
]
}
CVE-2026-43248 (GCVE-0-2026-43248)
Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-08-05 12:26
VLAI
EPSS
VEX
Title
vhost: move vdpa group bound check to vhost_vdpa
Summary
In the Linux kernel, the following vulnerability has been resolved:
vhost: move vdpa group bound check to vhost_vdpa
Remove duplication by consolidating these here. This reduces the
posibility of a parent driver missing them.
While we're at it, fix a bug in vdpa_sim where a valid ASID can be
assigned to a group equal to ngroups, causing an out of bound write.
Severity
7.8 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
bda324fd037a6b0d44da5699574ce741ca161bc4 , < ddb57354634b6ba851b79da45f1de42c646f27d0
(git)
Affected: bda324fd037a6b0d44da5699574ce741ca161bc4 , < 7441d35d14d9a3d66d925d90cb73c75394e6d454 (git) Affected: bda324fd037a6b0d44da5699574ce741ca161bc4 , < 406db68f9cb976a8ddfafd631197264f2307e9c9 (git) Affected: bda324fd037a6b0d44da5699574ce741ca161bc4 , < cd025c1e876b4e262e71398236a1550486a73ede (git) |
|
| Linux | Linux |
Affected:
5.19
Unaffected: 0 , < 5.19 (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
{
"containers": {
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],
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{
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"programFiles": [
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],
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"version": "5.19"
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{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"version": "6.12.75",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.18.16",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.19.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost: move vdpa group bound check to vhost_vdpa\n\nRemove duplication by consolidating these here. This reduces the\nposibility of a parent driver missing them.\n\nWhile we\u0027re at it, fix a bug in vdpa_sim where a valid ASID can be\nassigned to a group equal to ngroups, causing an out of bound write."
}
],
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{
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"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerable path is reached through local `ioctl()` calls on a `/dev/vhost-vdpa-*` character device, not by network or adjacent traffic.\nAC:L - The attacker controls the ioctl arguments, including the group index and ASID, and no race or external timing condition is required once the device is accessible.\nPR:L - Creating or binding vDPA devices is administrative, but a delegated/local VM or vDPA process with access to the vhost-vdpa device can trigger the ioctl without further kernel capability checks. Choosing the higher severity option, this is Low rather than High.\nUI:N - No victim user action is needed; the local attacker directly opens the device, becomes vhost owner, and issues the ioctl.\nS:U - The impact is corruption of host kernel memory from a local host device interface, which is a standard kernel privilege/security-domain impact rather than a VM escape or separate authority crossing.\nC:H - The missing group bound permits out-of-bounds kernel heap access in the parent set_group_asid path, and such memory corruption can reasonably be developed into kernel memory disclosure.\nI:H - The bug permits an out-of-bounds kernel write of ASID/group state or adjacent locking/state fields, making kernel memory corruption and potential control-flow or privilege manipulation plausible.\nA:H - Even without full exploitation, the out-of-bounds write can corrupt kernel heap state and can reasonably crash or panic the kernel."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:26:51.590Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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},
{
"url": "https://git.kernel.org/stable/c/7441d35d14d9a3d66d925d90cb73c75394e6d454"
},
{
"url": "https://git.kernel.org/stable/c/406db68f9cb976a8ddfafd631197264f2307e9c9"
},
{
"url": "https://git.kernel.org/stable/c/cd025c1e876b4e262e71398236a1550486a73ede"
}
],
"title": "vhost: move vdpa group bound check to vhost_vdpa",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-43248",
"datePublished": "2026-05-06T11:28:39.578Z",
"dateReserved": "2026-05-01T14:12:55.996Z",
"dateUpdated": "2026-08-05T12:26:51.590Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-63923 (GCVE-0-2026-63923)
Vulnerability from cvelistv5 – Published: 2026-07-19 14:55 – Updated: 2026-08-05 12:37
VLAI
EPSS
VEX
Title
octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify
Summary
In the Linux kernel, the following vulnerability has been resolved:
octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify
rvu_mbox_handler_rep_event_notify() in drivers/net/ethernet/marvell/
octeontx2/af/rvu_rep.c queues a sender-controlled REP_EVENT_NOTIFY
request body verbatim, and rvu_rep_up_notify() then forwards
event->pcifunc (the nested body field, distinct from the
AF-normalised header pcifunc) into rvu_get_pfvf(), rvu_get_pf() and
the AF->PF mailbox device index without any bounds check.
A VF attached to a PF that has been put into switchdev
representor mode reaches this path: the VF mailbox handler
otx2_pfvf_mbox_handler() forwards every message id including
MBOX_MSG_REP_EVENT_NOTIFY to AF without an allowlist, and the AF
dispatcher rewrites only msg->pcifunc, leaving struct
rep_event::pcifunc attacker-controlled. The sibling
rvu_mbox_handler_esw_cfg() refuses requests whose header pcifunc
is not rvu->rep_pcifunc; this handler has no equivalent gate.
An out-of-range body pcifunc selects an &rvu->pf[]/&rvu->hwvf[]
element past the allocated array and, for RVU_EVENT_MAC_ADDR_CHANGE,
turns into a six-byte attacker-chosen OOB ether_addr_copy() target
inside the queued worker; KASAN reports a slab-out-of-bounds write
in rvu_rep_wq_handler.
Reject malformed requests at the handler entry by gating on
is_pf_func_valid(), which is already the canonical PF/VF range check
in this driver; expose it via rvu.h so callers in rvu_rep.c can use
it instead of open-coding the same range arithmetic.
Severity
8.8 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
b8fea84a0468404fe3b3327ad54d583950be9dec , < 4467fa514482bbce82f73788943c815f3d126ab3
(git)
Affected: b8fea84a0468404fe3b3327ad54d583950be9dec , < 68be0260e2a02ff9b18a8678d5f8d1715fa20138 (git) Affected: b8fea84a0468404fe3b3327ad54d583950be9dec , < 2156a29aecfffa2eb7c558255690084efbe9f3b0 (git) |
|
| Linux | Linux |
Affected:
6.13
Unaffected: 0 , < 6.13 (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.0.12 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/ethernet/marvell/octeontx2/af/rvu.c",
"drivers/net/ethernet/marvell/octeontx2/af/rvu.h",
"drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c"
],
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{
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"drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c"
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"negate": false,
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify\n\nrvu_mbox_handler_rep_event_notify() in drivers/net/ethernet/marvell/\nocteontx2/af/rvu_rep.c queues a sender-controlled REP_EVENT_NOTIFY\nrequest body verbatim, and rvu_rep_up_notify() then forwards\nevent-\u003epcifunc (the nested body field, distinct from the\nAF-normalised header pcifunc) into rvu_get_pfvf(), rvu_get_pf() and\nthe AF-\u003ePF mailbox device index without any bounds check.\n\nA VF attached to a PF that has been put into switchdev\nrepresentor mode reaches this path: the VF mailbox handler\notx2_pfvf_mbox_handler() forwards every message id including\nMBOX_MSG_REP_EVENT_NOTIFY to AF without an allowlist, and the AF\ndispatcher rewrites only msg-\u003epcifunc, leaving struct\nrep_event::pcifunc attacker-controlled. The sibling\nrvu_mbox_handler_esw_cfg() refuses requests whose header pcifunc\nis not rvu-\u003erep_pcifunc; this handler has no equivalent gate.\n\nAn out-of-range body pcifunc selects an \u0026rvu-\u003epf[]/\u0026rvu-\u003ehwvf[]\nelement past the allocated array and, for RVU_EVENT_MAC_ADDR_CHANGE,\nturns into a six-byte attacker-chosen OOB ether_addr_copy() target\ninside the queued worker; KASAN reports a slab-out-of-bounds write\nin rvu_rep_wq_handler.\n\nReject malformed requests at the handler entry by gating on\nis_pf_func_valid(), which is already the canonical PF/VF range check\nin this driver; expose it via rvu.h so callers in rvu_rep.c can use\nit instead of open-coding the same range arithmetic."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The bug is reached through the OcteonTX2 VF\u2192PF\u2192AF PCI mailbox control path, not through packet reception or any network protocol. Exploitation requires local access to an assigned SR-IOV VF device on a Marvell OCTEONTX2/CN9K/CN10K NIC.\nAC:L - Once a VF is assigned in switchdev representor mode, the attacker fully controls the malicious `rep_event` body fields (including `pcifunc`, event flags, and MAC data) and can trigger the path deterministically via repeated mailbox messages without races or uncontrollable timing.\nPR:L - Exploitation requires control of an assigned VF (typical cloud/tenant VM or container with SR-IOV passthrough), not host root; the PF mailbox forwarder passes every VF message ID including `MBOX_MSG_REP_EVENT_NOTIFY` to AF without an allowlist or trusted-VF gate on this path.\nUI:N - No victim user action (mounting, clicking, opening files) is required; the attacker triggers the vulnerable handler directly by sending a crafted mailbox message from their VF.\nS:C - In the highest-impact deployment (SR-IOV VF assigned to an untrusted VM/container tenant), corruption occurs in the host AF driver, crossing the guest/host security boundary analogous to device-mediated VM escape rather than a same-authority local privilege change.\nC:H - An out-of-range body `pcifunc` makes `rvu_get_pfvf()` return a pointer past the allocated `rvu-\u003epf[]`/`rvu-\u003ehwvf[]` arrays, and the slab-out-of-bounds write corrupts adjacent kernel heap memory in a way that can be leveraged for arbitrary kernel memory disclosure.\nI:H - For `RVU_EVENT_MAC_ADDR_CHANGE`, the worker performs a six-byte attacker-chosen `ether_addr_copy()` to an out-of-bounds `rvu_pfvf` target, constituting an exploitable out-of-bounds kernel heap write suitable for control-flow or privilege-escalation primitives.\nA:H - The out-of-bounds heap write in `rvu_rep_wq_handler` can trigger a kernel oops/panic (as confirmed by KASAN slab-out-of-bounds reports) and can be repeated on demand to deny service to the host."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:37:18.035Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/4467fa514482bbce82f73788943c815f3d126ab3"
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CVE-2026-64015 (GCVE-0-2026-64015)
Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-08-05 12:38
VLAI
EPSS
VEX
Title
security/keys: fix missed RCU read section on lookup
Summary
In the Linux kernel, the following vulnerability has been resolved:
security/keys: fix missed RCU read section on lookup
Nicholas Carlini reports that the keyring code calls assoc_array_find()
in find_key_to_update() without holding the RCU read lock, while the
assoc_array_gc() code really is designed around removing the node from
the tree and then freeing it after an RCU grace-period.
The regular key handling doesn't see this because holding the keyring
semaphore hides any lifetime issues, but the persistent key handling
uses a different model.
Instead of extending the keyring locking, just do the simple RCU locking
that the assoc_array was designed for.
Severity
7.8 (High)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/4c5d407ba3ff7f305… | |
| https://git.kernel.org/stable/c/cefa4265b11176c89… | |
| https://git.kernel.org/stable/c/5659e6923cb72f8e1… | |
| https://git.kernel.org/stable/c/50bb3435a5e627bfb… | |
| https://git.kernel.org/stable/c/66288dcadf8097443… | |
| https://git.kernel.org/stable/c/43a1e3744548e6fd8… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 , < 4c5d407ba3ff7f30561ff73ba1b07ed70c864edc
(git)
Affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 , < cefa4265b11176c897a7d9e8e54d89e3701c5584 (git) Affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 , < 5659e6923cb72f8e18e8b539109ab512455fe195 (git) Affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 , < 50bb3435a5e627bfbdc52eb4536f49f88b3486b8 (git) Affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 , < 66288dcadf80974436250e9f70ed848836b835b5 (git) Affected: b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 , < 43a1e3744548e6fd85873e6fb43e293eb4010694 (git) |
|
| Linux | Linux |
Affected:
3.13
Unaffected: 0 , < 3.13 (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.142 , ≤ 6.6.* (semver) Unaffected: 6.12.92 , ≤ 6.12.* (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
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CVE-2026-68143 (GCVE-0-2026-68143)
Vulnerability from cvelistv5 – Published: 2026-08-10 11:59 – Updated: 2026-08-19 16:30
VLAI
EPSS
VEX
Title
net: slip: serialize receive against buffer reallocation
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: slip: serialize receive against buffer reallocation
sl_realloc_bufs() replaces rbuff and updates buffsize while holding
sl->lock. slip_receive_buf() reads those fields and writes through rbuff
without holding the lock.
An MTU change can therefore race with receive processing. An MTU shrink
can expose the new smaller rbuff with the old larger bound, causing an
out-of-bounds write. A receive callback which already loaded the old
rbuff can instead continue writing after that buffer has been freed.
Serialize receive processing with sl_realloc_bufs() by holding sl->lock
while consuming each receive batch.
Severity
7.8 (High)
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/8180daf2b66155f84… | |
| https://git.kernel.org/stable/c/189a550eb7e1dc100… | |
| https://git.kernel.org/stable/c/1be09d175b627fad7… | |
| https://git.kernel.org/stable/c/eb3836eab47487823… | |
| https://git.kernel.org/stable/c/44401f7dd9940ced7… | |
| https://git.kernel.org/stable/c/5d07b178bef511d69… | |
| https://git.kernel.org/stable/c/0e37bbd6d617eb52b… | |
| https://git.kernel.org/stable/c/ee7f9bb9320add61f… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8180daf2b66155f84ec4f9e3f95488c8a3421716
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 189a550eb7e1dc10018718ddfc46d003ffe58653 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1be09d175b627fad7f6bec7ad27b8a4a99863912 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < eb3836eab47487823f362e6985e170a1e15f20fd (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 44401f7dd9940ced7098930ef64f5a332f279fc2 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5d07b178bef511d69558cfc89fe1129258dc39f8 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0e37bbd6d617eb52bace49390e99eaedc1af73ce (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ee7f9bb9320add61f7b367d7e6cd55e3a3a4d65d (git) |
|
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.265 , ≤ 5.10.* (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1.6 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
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"value": "AV:L - The bug is in the SLIP TTY line discipline; triggering the MTU shrink/realloc race requires SIOCSIFMTU/RTM_SETLINK (CAP_NET_ADMIN) on the host, so a single attacker must have local access even if SLIP frames arrive over a serial backhaul.\nAC:L - An attacker with CAP_NET_ADMIN can concurrently hammer MTU changes via ioctl/rtnetlink and inject SLIP frames on the bound TTY/PTY, controlling both sides of the race without depending on uncontrollable timing.\nPR:L - SIOCSIFMTU requires CAP_NET_ADMIN in the interface network namespace, obtainable by an unprivileged user via user namespaces; exploitation targets already-active SLIP links and does not repeat slip_open()\u0027s init-namespace check.\nUI:N - No end-user or administrator interaction is required during exploitation once a SLIP interface is active; the attacker drives both MTU reallocation and receive processing directly.\nS:U - Heap corruption is confined to kernel SLIP receive buffers and adjacent kmalloc objects; impact is standard kernel memory corruption and local privilege escalation, not a cross-VM or sandbox boundary escape.\nC:H - The race yields heap out-of-bounds writes and use-after-free writes on freed rbuff kmalloc objects; per kernel guidance, this class of memory corruption enables arbitrary kernel memory disclosure.\nI:H - Writing past the reallocated rbuff boundary or into a freed buffer corrupts adjacent heap metadata/objects, providing primitives for arbitrary kernel writes and control-flow hijacking.\nA:H - Out-of-bounds and use-after-free corruption of kernel heap memory reliably causes kernel oops/panic during the race even when not fully weaponized for code execution."
}
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"cveId": "CVE-2026-68143",
"datePublished": "2026-08-10T11:59:07.354Z",
"dateReserved": "2026-07-30T09:28:09.370Z",
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CVE-2026-68294 (GCVE-0-2026-68294)
Vulnerability from cvelistv5 – Published: 2026-08-10 12:02 – Updated: 2026-08-19 16:32
VLAI
EPSS
VEX
Title
net: qrtr: restrict socket creation to the initial network namespace
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: qrtr: restrict socket creation to the initial network namespace
QRTR keeps its entire port and node state in module-global variables
that are not partitioned per network namespace: qrtr_local_nid is a
single global node id (always 1) and qrtr_ports is a single global
xarray. qrtr_port_lookup() and qrtr_local_enqueue() operate on that
global state with no network-namespace check, and qrtr_create() places
no restriction on the namespace a socket is created in.
As a result an unprivileged process that creates an AF_QIPCRTR socket
in a separate network namespace, e.g. via
unshare(CLONE_NEWUSER | CLONE_NEWNET), can send QRTR datagrams -
including control-plane messages such as QRTR_TYPE_NEW_SERVER - to QRTR
sockets owned by another namespace, and vice versa. The receiving
socket sees such a message as coming from node id 1, indistinguishable
from a legitimate local client, breaking the isolation that network
namespaces are expected to provide.
QRTR is a transport to global hardware endpoints (the modem and other
remote processors) and has no per-namespace semantics; its in-kernel
name service already creates its socket in init_net only. Confine the
socket family to the initial network namespace, as other
non-namespace-aware socket families do (see llc_ui_create() and the
ieee802154 socket code).
Severity
8.8 (High)
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/7814f6a3415cad38a… | |
| https://git.kernel.org/stable/c/2d22b94a154ccb975… | |
| https://git.kernel.org/stable/c/8d351fe0654a20c9f… | |
| https://git.kernel.org/stable/c/4b95e1f0d6e6342c4… | |
| https://git.kernel.org/stable/c/f488116df769bdaf8… | |
| https://git.kernel.org/stable/c/8150c48fb978e0168… | |
| https://git.kernel.org/stable/c/659b9b4f194bb56b9… | |
| https://git.kernel.org/stable/c/3b536db8fb32da9e9… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
bdabad3e363d825ddf9679dd431cca0b2c30f881 , < 7814f6a3415cad38aa8d6dfc573df778260d66aa
(git)
Affected: bdabad3e363d825ddf9679dd431cca0b2c30f881 , < 2d22b94a154ccb9755dddfff802fe3e2b1adbab5 (git) Affected: bdabad3e363d825ddf9679dd431cca0b2c30f881 , < 8d351fe0654a20c9f95a61b05d24ebe6d4be3fbb (git) Affected: bdabad3e363d825ddf9679dd431cca0b2c30f881 , < 4b95e1f0d6e6342c427cb341ee18a894b146b789 (git) Affected: bdabad3e363d825ddf9679dd431cca0b2c30f881 , < f488116df769bdaf89c93371350e49e12133e70f (git) Affected: bdabad3e363d825ddf9679dd431cca0b2c30f881 , < 8150c48fb978e01689f94ed80148f8a7499ae571 (git) Affected: bdabad3e363d825ddf9679dd431cca0b2c30f881 , < 659b9b4f194bb56b9903cc95e786ef1d438baa7d (git) Affected: bdabad3e363d825ddf9679dd431cca0b2c30f881 , < 3b536db8fb32da9e9c62f2bb45e2e319331f0426 (git) |
|
| Linux | Linux |
Affected:
4.7
Unaffected: 0 , < 4.7 (semver) Unaffected: 5.10.265 , ≤ 5.10.* (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1.6 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: restrict socket creation to the initial network namespace\n\nQRTR keeps its entire port and node state in module-global variables\nthat are not partitioned per network namespace: qrtr_local_nid is a\nsingle global node id (always 1) and qrtr_ports is a single global\nxarray. qrtr_port_lookup() and qrtr_local_enqueue() operate on that\nglobal state with no network-namespace check, and qrtr_create() places\nno restriction on the namespace a socket is created in.\n\nAs a result an unprivileged process that creates an AF_QIPCRTR socket\nin a separate network namespace, e.g. via\nunshare(CLONE_NEWUSER | CLONE_NEWNET), can send QRTR datagrams -\nincluding control-plane messages such as QRTR_TYPE_NEW_SERVER - to QRTR\nsockets owned by another namespace, and vice versa. The receiving\nsocket sees such a message as coming from node id 1, indistinguishable\nfrom a legitimate local client, breaking the isolation that network\nnamespaces are expected to provide.\n\nQRTR is a transport to global hardware endpoints (the modem and other\nremote processors) and has no per-namespace semantics; its in-kernel\nname service already creates its socket in init_net only. Confine the\nsocket family to the initial network namespace, as other\nnon-namespace-aware socket families do (see llc_ui_create() and the\nieee802154 socket code)."
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}
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CVE-2026-72045 (GCVE-0-2026-72045)
Vulnerability from cvelistv5 – Published: 2026-08-15 05:52 – Updated: 2026-08-23 12:46
VLAI
EPSS
VEX
Title
octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF
Summary
In the Linux kernel, the following vulnerability has been resolved:
octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF
rvu_mbox_handler_lmtst_tbl_setup() uses req->base_pcifunc as a direct
index into the LMT map table to read another function's LMTLINE
physical base address and copy it into the caller's own LMT map table
entry. The mailbox dispatcher authenticates req->hdr.pcifunc from the
IRQ source, but req->base_pcifunc is a separate payload field and is
not sanitized.
Reject the request with -EPERM when a VF caller's base_pcifunc is not a
valid function under its own PF. is_pf_func_valid() bounds the FUNC field
to the PF's configured VF count, keeping the computed index inside the
caller's own slot block.
Severity
8.8 (High)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/04c014e49b9f53d58… | |
| https://git.kernel.org/stable/c/6967dd944be2a71ed… | |
| https://git.kernel.org/stable/c/e9c5b03208507dd6d… | |
| https://git.kernel.org/stable/c/54535692bec9ef464… | |
| https://git.kernel.org/stable/c/c73b8795b45f4ad5a… | |
| https://git.kernel.org/stable/c/59da37fee81a8d760… | |
| https://git.kernel.org/stable/c/8cdcf3d2caacdee7d… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
893ae97214c385be02f8ec097298cc48c7f0d905 , < 04c014e49b9f53d58a8f94adece8a0af3ae1b85c
(git)
Affected: 893ae97214c385be02f8ec097298cc48c7f0d905 , < 6967dd944be2a71eddab3a2ae1a1a4dd9e5f8eed (git) Affected: 893ae97214c385be02f8ec097298cc48c7f0d905 , < e9c5b03208507dd6d58b0c23a2c60b5c2f4c1b11 (git) Affected: 893ae97214c385be02f8ec097298cc48c7f0d905 , < 54535692bec9ef464adc714108eb19e49e38b5a2 (git) Affected: 893ae97214c385be02f8ec097298cc48c7f0d905 , < c73b8795b45f4ad5a95120d2e9b435ea4616e08e (git) Affected: 893ae97214c385be02f8ec097298cc48c7f0d905 , < 59da37fee81a8d76079313348ca13c5bc90dd6ae (git) Affected: 893ae97214c385be02f8ec097298cc48c7f0d905 , < 8cdcf3d2caacdee7ddd363705fb4d93b0c1a0915 (git) |
|
| Linux | Linux |
Affected:
5.14
Unaffected: 0 , < 5.14 (semver) Unaffected: 5.15.217 , ≤ 5.15.* (semver) Unaffected: 6.1.184 , ≤ 6.1.* (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF\n\nrvu_mbox_handler_lmtst_tbl_setup() uses req-\u003ebase_pcifunc as a direct\nindex into the LMT map table to read another function\u0027s LMTLINE\nphysical base address and copy it into the caller\u0027s own LMT map table\nentry. The mailbox dispatcher authenticates req-\u003ehdr.pcifunc from the\nIRQ source, but req-\u003ebase_pcifunc is a separate payload field and is\nnot sanitized.\n\nReject the request with -EPERM when a VF caller\u0027s base_pcifunc is not a\nvalid function under its own PF. is_pf_func_valid() bounds the FUNC field\nto the PF\u0027s configured VF count, keeping the computed index inside the\ncaller\u0027s own slot block."
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"value": "AV:L - Exploitation requires local control of an assigned Marvell CN10K/OCTEONTX2 SR-IOV VF and sending a crafted LMTST_TBL_SETUP mailbox message over the PCI VF\u2192AF control path (rvu_afvf_mbox_handler\u2192rvu_mbox_handler_lmtst_tbl_setup); it is not reachable via remote packet delivery.\nAC:L - Once a VF is assigned, the attacker fully controls the unsanitized base_pcifunc payload field and can trigger the flaw deterministically with a single mailbox message; no race, special memory layout, or victim timing is required.\nPR:L - Only control of an assigned VF is needed (typical cloud/tenant VM or container with SR-IOV passthrough, or guest root/CAP_NET_ADMIN managing the VF); host init-namespace root is not required and unprivileged host users cannot reach this hardware mailbox without the VF device.\nUI:N - No victim user action is required; the attacker directly sends the malicious LMTST_TBL_SETUP mailbox request from their VF to the AF handler.\nS:C - A malicious VF tenant can retarget hardware LMTLINE stores to another PF/VF\u0027s memory region, crossing the SR-IOV tenant isolation boundary and enabling guest-to-host or guest-to-guest impact on shared CN10K NIC deployments.\nC:H - Redirecting a VF\u0027s LMT map entry to another function\u0027s LMTLINE region lets the attacker read victim in-flight packet/crypto submission metadata and buffer pointers from shared hardware LMT memory, constituting cross-tenant information disclosure beyond the attacker\u0027s scope.\nI:H - After the map-table redirect, the attacker\u0027s LMTST flush operations (packet TX SQE submission, NPA aura free, CPT enqueue) are hardware-written into the victim\u0027s LMTLINE physical pages, enabling arbitrary cross-tenant memory corruption and potential control of victim I/O submission state.\nA:H - Corrupting another PF/VF\u0027s LMTLINE submission buffers can crash or hang the victim\u0027s networking/crypto stack (guest kernel oops/panic or persistent TX failure) and the attack can be repeated on demand by resending mailbox requests."
}
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}
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"title": "octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF",
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CVE-2026-74556 (GCVE-0-2026-74556)
Vulnerability from cvelistv5 – Published: 2026-08-15 12:28 – Updated: 2026-08-19 16:38
VLAI
EPSS
VEX
Title
scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer
iscsi_tcp_hdr_dissect() receives the data segment of several PDU types
into the fixed-size conn->data buffer, which is allocated for
ISCSI_DEF_MAX_RECV_SEG_LEN (8192) bytes. For the LOGIN_RSP, TEXT_RSP,
REJECT and ASYNC_EVENT opcodes the dissect path already rejects a PDU
whose DataSegmentLength exceeds that buffer.
The SCSI Command Response (ISCSI_OP_SCSI_CMD_RSP) path also copies its
data segment (sense/response data) into conn->data via
iscsi_tcp_data_recv_prep(), but it does so without the same check. The
only upstream bound on in.datalen is conn->max_recv_dlength, the
initiator's advertised MaxRecvDataSegmentLength, which is commonly
negotiated well above 8192 (open-iscsi defaults to 262144). A target
that returns a SCSI Response with a DataSegmentLength between 8193 and
max_recv_dlength therefore overflows the 8192-byte conn->data buffer.
Once the same bound applies, ISCSI_OP_SCSI_CMD_RSP is handled exactly
like those responses: bound the data segment, receive it into conn->data
when present, and otherwise complete the PDU with no data. Fold the
opcode into that case group rather than duplicating the check.
Severity
9.8 (Critical)
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/a51812842084fd390… | |
| https://git.kernel.org/stable/c/a8f94cc9f0e575925… | |
| https://git.kernel.org/stable/c/f1a3a51fc5dba0e99… | |
| https://git.kernel.org/stable/c/c97b5265cc47775f7… | |
| https://git.kernel.org/stable/c/084af0253673425ce… | |
| https://git.kernel.org/stable/c/72815741715bd4155… | |
| https://git.kernel.org/stable/c/b0aa3e8e2ab4ca92a… | |
| https://git.kernel.org/stable/c/c1dea15f819cded9b… |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
a081c13e39b5c17052a7b46fafa61019c4c110ff , < a51812842084fd390590ab8dc0431f10c73ddc56
(git)
Affected: a081c13e39b5c17052a7b46fafa61019c4c110ff , < a8f94cc9f0e5759252551be3a172960c57f21f54 (git) Affected: a081c13e39b5c17052a7b46fafa61019c4c110ff , < f1a3a51fc5dba0e99532379665069f1700da6b44 (git) Affected: a081c13e39b5c17052a7b46fafa61019c4c110ff , < c97b5265cc47775f77fd2a23d6bde0426997b233 (git) Affected: a081c13e39b5c17052a7b46fafa61019c4c110ff , < 084af0253673425ce2ae62e3c7f74f0dd023711b (git) Affected: a081c13e39b5c17052a7b46fafa61019c4c110ff , < 72815741715bd41556dac5eeb068bf0f8af06ee7 (git) Affected: a081c13e39b5c17052a7b46fafa61019c4c110ff , < b0aa3e8e2ab4ca92adb28a3ef41873b3363b8676 (git) Affected: a081c13e39b5c17052a7b46fafa61019c4c110ff , < c1dea15f819cded9b3faf58f8bec72323568b6e6 (git) |
|
| Linux | Linux |
Affected:
2.6.29
Unaffected: 0 , < 2.6.29 (semver) Unaffected: 5.10.265 , ≤ 5.10.* (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.151 , ≤ 6.6.* (semver) Unaffected: 6.12.103 , ≤ 6.12.* (semver) Unaffected: 6.18.44 , ≤ 6.18.* (semver) Unaffected: 7.1.8 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer\n\niscsi_tcp_hdr_dissect() receives the data segment of several PDU types\ninto the fixed-size conn-\u003edata buffer, which is allocated for\nISCSI_DEF_MAX_RECV_SEG_LEN (8192) bytes. For the LOGIN_RSP, TEXT_RSP,\nREJECT and ASYNC_EVENT opcodes the dissect path already rejects a PDU\nwhose DataSegmentLength exceeds that buffer.\n\nThe SCSI Command Response (ISCSI_OP_SCSI_CMD_RSP) path also copies its\ndata segment (sense/response data) into conn-\u003edata via\niscsi_tcp_data_recv_prep(), but it does so without the same check. The\nonly upstream bound on in.datalen is conn-\u003emax_recv_dlength, the\ninitiator\u0027s advertised MaxRecvDataSegmentLength, which is commonly\nnegotiated well above 8192 (open-iscsi defaults to 262144). A target\nthat returns a SCSI Response with a DataSegmentLength between 8193 and\nmax_recv_dlength therefore overflows the 8192-byte conn-\u003edata buffer.\n\nOnce the same bound applies, ISCSI_OP_SCSI_CMD_RSP is handled exactly\nlike those responses: bound the data segment, receive it into conn-\u003edata\nwhen present, and otherwise complete the PDU with no data. Fold the\nopcode into that case group rather than duplicating the check."
}
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"value": "AV:N - A malicious or compromised iSCSI target delivers crafted SCSI Command Response PDUs over the established TCP iSCSI session; reception flows through iscsi_sw_tcp_recv/iscsi_tcp_recv_skb into iscsi_tcp_hdr_dissect without local access.\nAC:L - The attacker controls the target and can set DataSegmentLength between 8193 and negotiated max_recv_dlength (open-iscsi commonly 262144) on SCSI_CMD_RSP for any outstanding command ITT; no races or victim-specific heap layout are required.\nPR:N - No privileges on the victim host are needed; a remote attacker acting as or MITMing the iSCSI target sends malicious responses after session login, independent of victim user accounts or capabilities.\nUI:N - On systems with persistent iSCSI sessions (cloud VMs, SAN-boot hosts, Kubernetes iSCSI volumes), exploitation triggers automatically during normal SCSI I/O when command responses are received; no victim action is needed at attack time.\nS:U - Heap corruption is confined to the kernel iSCSI initiator on the affected host; successful exploitation yields kernel compromise or DoS within the same security authority, not a VM escape or cross-boundary scope change.\nC:H - iscsi_tcp_segment_recv memcpy writes up to max_recv_dlength bytes into an 8192-byte conn-\u003edata buffer, causing a large heap overflow whose controlled corruption can be leveraged for arbitrary kernel memory disclosure.\nI:H - Attacker-controlled response data is copied past the fixed conn-\u003edata allocation via iscsi_tcp_data_recv_prep/iscsi_segment_init_linear, enabling heap metadata/object corruption exploitable for arbitrary kernel write and privilege escalation.\nA:H - Overflowing the conn-\u003edata heap buffer can immediately corrupt adjacent kernel allocations and cause oops/panic; a malicious target can repeatedly trigger this on active sessions to deny storage availability."
}
]
}
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"title": "scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer",
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},
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}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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