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                "cweId": "CWE-476",
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          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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          ],
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          "vendor": "Linux",
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            {
              "lessThanOrEqual": "*",
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              "version": "6.2",
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        {
          "nodes": [
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: fix multipath crash caused by flush request when blktrace is enabled\n\nThe flush request initialized by blk_kick_flush has NULL bio,\nand it may be dealt with nvme_end_req during io completion.\nWhen blktrace is enabled, nvme_trace_bio_complete with multipath\nactivated trying to access NULL pointer bio from flush request\nresults in the following crash:\n\n[ 2517.831677] BUG: kernel NULL pointer dereference, address: 000000000000001a\n[ 2517.835213] #PF: supervisor read access in kernel mode\n[ 2517.838724] #PF: error_code(0x0000) - not-present page\n[ 2517.842222] PGD 7b2d51067 P4D 0\n[ 2517.845684] Oops: 0000 [#1] SMP NOPTI\n[ 2517.849125] CPU: 2 PID: 732 Comm: kworker/2:1H Kdump: loaded Tainted: G S                5.15.67-0.cl9.x86_64 #1\n[ 2517.852723] Hardware name: XFUSION 2288H V6/BC13MBSBC, BIOS 1.13 07/27/2022\n[ 2517.856358] Workqueue: nvme_tcp_wq nvme_tcp_io_work [nvme_tcp]\n[ 2517.859993] RIP: 0010:blk_add_trace_bio_complete+0x6/0x30\n[ 2517.863628] Code: 1f 44 00 00 48 8b 46 08 31 c9 ba 04 00 10 00 48 8b 80 50 03 00 00 48 8b 78 50 e9 e5 fe ff ff 0f 1f 44 00 00 41 54 49 89 f4 55 \u003c0f\u003e b6 7a 1a 48 89 d5 e8 3e 1c 2b 00 48 89 ee 4c 89 e7 5d 89 c1 ba\n[ 2517.871269] RSP: 0018:ff7f6a008d9dbcd0 EFLAGS: 00010286\n[ 2517.875081] RAX: ff3d5b4be00b1d50 RBX: 0000000002040002 RCX: ff3d5b0a270f2000\n[ 2517.878966] RDX: 0000000000000000 RSI: ff3d5b0b021fb9f8 RDI: 0000000000000000\n[ 2517.882849] RBP: ff3d5b0b96a6fa00 R08: 0000000000000001 R09: 0000000000000000\n[ 2517.886718] R10: 000000000000000c R11: 000000000000000c R12: ff3d5b0b021fb9f8\n[ 2517.890575] R13: 0000000002000000 R14: ff3d5b0b021fb1b0 R15: 0000000000000018\n[ 2517.894434] FS:  0000000000000000(0000) GS:ff3d5b42bfc80000(0000) knlGS:0000000000000000\n[ 2517.898299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 2517.902157] CR2: 000000000000001a CR3: 00000004f023e005 CR4: 0000000000771ee0\n[ 2517.906053] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 2517.909930] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 2517.913761] PKRU: 55555554\n[ 2517.917558] Call Trace:\n[ 2517.921294]  \u003cTASK\u003e\n[ 2517.924982]  nvme_complete_rq+0x1c3/0x1e0 [nvme_core]\n[ 2517.928715]  nvme_tcp_recv_pdu+0x4d7/0x540 [nvme_tcp]\n[ 2517.932442]  nvme_tcp_recv_skb+0x4f/0x240 [nvme_tcp]\n[ 2517.936137]  ? nvme_tcp_recv_pdu+0x540/0x540 [nvme_tcp]\n[ 2517.939830]  tcp_read_sock+0x9c/0x260\n[ 2517.943486]  nvme_tcp_try_recv+0x65/0xa0 [nvme_tcp]\n[ 2517.947173]  nvme_tcp_io_work+0x64/0x90 [nvme_tcp]\n[ 2517.950834]  process_one_work+0x1e8/0x390\n[ 2517.954473]  worker_thread+0x53/0x3c0\n[ 2517.958069]  ? process_one_work+0x390/0x390\n[ 2517.961655]  kthread+0x10c/0x130\n[ 2517.965211]  ? set_kthread_struct+0x40/0x40\n[ 2517.968760]  ret_from_fork+0x1f/0x30\n[ 2517.972285]  \u003c/TASK\u003e\n\nTo avoid this situation, add a NULL check for req-\u003ebio before\ncalling trace_block_bio_complete."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:18:34.280Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f13301a69ababa6c2236fb4f0393b7e914e7e1e0"
        },
        {
          "url": "https://git.kernel.org/stable/c/4df413d46960f11c8c105238cfc3f5ff4c95c003"
        },
        {
          "url": "https://git.kernel.org/stable/c/fcd2d199486033223e9b2a6a7f9a01dd0327eac3"
        },
        {
          "url": "https://git.kernel.org/stable/c/183c2aaef40a91acbaae45c3824d6cde7bb62b10"
        },
        {
          "url": "https://git.kernel.org/stable/c/3659fb5ac29a5e6102bebe494ac789fd47fb78f4"
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      ],
      "title": "nvme: fix multipath crash caused by flush request when blktrace is enabled",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50388",
    "datePublished": "2025-09-18T13:33:08.612Z",
    "dateReserved": "2025-09-17T14:53:06.997Z",
    "dateUpdated": "2026-05-11T19:18:34.280Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
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              "confidentialityImpact": "HIGH",
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              "userInteraction": "NONE",
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          ]
        },
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()\n\nThere is an use-after-free reported by KASAN:\n\n  BUG: KASAN: use-after-free in acpi_ut_remove_reference+0x3b/0x82\n  Read of size 1 at addr ffff888112afc460 by task modprobe/2111\n  CPU: 0 PID: 2111 Comm: modprobe Not tainted 6.1.0-rc7-dirty\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),\n  Call Trace:\n   \u003cTASK\u003e\n   kasan_report+0xae/0xe0\n   acpi_ut_remove_reference+0x3b/0x82\n   acpi_ut_copy_iobject_to_iobject+0x3be/0x3d5\n   acpi_ds_store_object_to_local+0x15d/0x3a0\n   acpi_ex_store+0x78d/0x7fd\n   acpi_ex_opcode_1A_1T_1R+0xbe4/0xf9b\n   acpi_ps_parse_aml+0x217/0x8d5\n   ...\n   \u003c/TASK\u003e\n\nThe root cause of the problem is that the acpi_operand_object\nis freed when acpi_ut_walk_package_tree() fails in\nacpi_ut_copy_ipackage_to_ipackage(), lead to repeated release in\nacpi_ut_copy_iobject_to_iobject(). The problem was introduced\nby \"8aa5e56eeb61\" commit, this commit is to fix memory leak in\nacpi_ut_copy_iobject_to_iobject(), repeatedly adding remove\noperation, lead to \"acpi_operand_object\" used after free.\n\nFix it by removing acpi_ut_remove_reference() in\nacpi_ut_copy_ipackage_to_ipackage(). acpi_ut_copy_ipackage_to_ipackage()\nis called to copy an internal package object into another internal\npackage object, when it fails, the memory of acpi_operand_object\nshould be freed by the caller."
        }
      ],
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              "value": "AV:L - The UAF is in the ACPICA AML interpreter (`acpi_ut_copy_ipackage_to_ipackage` during Store-to-Local), reached only via local ACPI table load or control-method evaluation; there is no network or adjacent-packet path into this code.\nAC:L - Once a firmware method Stores a shared package to a Local/Arg, the attacker can deterministically force the mid-walk AE_NO_MEMORY failure that triggers the double-free by exhausting memcg-accounted GFP_KERNEL allocations in the same process context that evaluates the method (e.g. container memory.max); no race or attacker-uncontrollable layout is required.\nPR:L - Unprivileged local users can drive ACPI method evaluation through world-readable ACPI/thermal/power sysfs attributes (0444) with no capability check; root-only interfaces such as configfs SSDT load or custom_method are not required on firmware that already Stores packages during those methods.\nUI:N - The attacker triggers evaluation directly via their own sysfs reads under memory pressure; no separate victim action such as mounting a filesystem is required.\nS:U - Impact is a host-kernel slab use-after-free within the same OS security authority; there is no VM escape, IOMMU bypass, or other cross-boundary compromise.\nC:H - The second `acpi_ut_remove_reference()` reads the already-freed Acpi-Operand object (as KASAN reported); reclaim/spray of that slab object yields an attacker-controlled read primitive, so confidentiality is High per UAF guidance.\nI:H - The same double-free of the package operand object is a classic heap UAF/double-free that enables spray-based arbitrary write and control-flow hijack primitives, so integrity is High.\nA:H - The bug was reported as a KASAN use-after-free and any second free or reuse of the dangling operand readily oopses/panics the kernel; per guidance any UAF is Availability High."
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          "url": "https://git.kernel.org/stable/c/470188b09e92d83c5a997f25f0e8fb8cd2bc3469"
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      "title": "ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()",
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkernfs: fix use-after-free in __kernfs_remove\n\nSyzkaller managed to trigger concurrent calls to\nkernfs_remove_by_name_ns() for the same file resulting in\na KASAN detected use-after-free. The race occurs when the root\nnode is freed during kernfs_drain().\n\nTo prevent this acquire an additional reference for the root\nof the tree that is removed before calling __kernfs_remove().\n\nFound by syzkaller with the following reproducer (slab_nomerge is\nrequired):\n\nsyz_mount_image$ext4(0x0, \u0026(0x7f0000000100)=\u0027./file0\\x00\u0027, 0x100000, 0x0, 0x0, 0x0, 0x0)\nr0 = openat(0xffffffffffffff9c, \u0026(0x7f0000000080)=\u0027/proc/self/exe\\x00\u0027, 0x0, 0x0)\nclose(r0)\npipe2(\u0026(0x7f0000000140)={0xffffffffffffffff, \u003cr1=\u003e0xffffffffffffffff}, 0x800)\nmount$9p_fd(0x0, \u0026(0x7f0000000040)=\u0027./file0\\x00\u0027, \u0026(0x7f00000000c0), 0x408, \u0026(0x7f0000000280)={\u0027trans=fd,\u0027, {\u0027rfdno\u0027, 0x3d, r0}, 0x2c, {\u0027wfdno\u0027, 0x3d, r1}, 0x2c, {[{@cache_loose}, {@mmap}, {@loose}, {@loose}, {@mmap}], [{@mask={\u0027mask\u0027, 0x3d, \u0027^MAY_EXEC\u0027}}, {@fsmagic={\u0027fsmagic\u0027, 0x3d, 0x10001}}, {@dont_hash}]}})\n\nSample report:\n\n==================================================================\nBUG: KASAN: use-after-free in kernfs_type include/linux/kernfs.h:335 [inline]\nBUG: KASAN: use-after-free in kernfs_leftmost_descendant fs/kernfs/dir.c:1261 [inline]\nBUG: KASAN: use-after-free in __kernfs_remove.part.0+0x843/0x960 fs/kernfs/dir.c:1369\nRead of size 2 at addr ffff8880088807f0 by task syz-executor.2/857\n\nCPU: 0 PID: 857 Comm: syz-executor.2 Not tainted 6.0.0-rc3-00363-g7726d4c3e60b #5\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x6e/0x91 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:317 [inline]\n print_report.cold+0x5e/0x5e5 mm/kasan/report.c:433\n kasan_report+0xa3/0x130 mm/kasan/report.c:495\n kernfs_type include/linux/kernfs.h:335 [inline]\n kernfs_leftmost_descendant fs/kernfs/dir.c:1261 [inline]\n __kernfs_remove.part.0+0x843/0x960 fs/kernfs/dir.c:1369\n __kernfs_remove fs/kernfs/dir.c:1356 [inline]\n kernfs_remove_by_name_ns+0x108/0x190 fs/kernfs/dir.c:1589\n sysfs_slab_add+0x133/0x1e0 mm/slub.c:5943\n __kmem_cache_create+0x3e0/0x550 mm/slub.c:4899\n create_cache mm/slab_common.c:229 [inline]\n kmem_cache_create_usercopy+0x167/0x2a0 mm/slab_common.c:335\n p9_client_create+0xd4d/0x1190 net/9p/client.c:993\n v9fs_session_init+0x1e6/0x13c0 fs/9p/v9fs.c:408\n v9fs_mount+0xb9/0xbd0 fs/9p/vfs_super.c:126\n legacy_get_tree+0xf1/0x200 fs/fs_context.c:610\n vfs_get_tree+0x85/0x2e0 fs/super.c:1530\n do_new_mount fs/namespace.c:3040 [inline]\n path_mount+0x675/0x1d00 fs/namespace.c:3370\n do_mount fs/namespace.c:3383 [inline]\n __do_sys_mount fs/namespace.c:3591 [inline]\n __se_sys_mount fs/namespace.c:3568 [inline]\n __x64_sys_mount+0x282/0x300 fs/namespace.c:3568\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x38/0x90 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7f725f983aed\nCode: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f725f0f7028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5\nRAX: ffffffffffffffda RBX: 00007f725faa3f80 RCX: 00007f725f983aed\nRDX: 00000000200000c0 RSI: 0000000020000040 RDI: 0000000000000000\nRBP: 00007f725f9f419c R08: 0000000020000280 R09: 0000000000000000\nR10: 0000000000000408 R11: 0000000000000246 R12: 0000000000000000\nR13: 0000000000000006 R14: 00007f725faa3f80 R15: 00007f725f0d7000\n \u003c/TASK\u003e\n\nAllocated by task 855:\n kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38\n kasan_set_track mm/kasan/common.c:45 [inline]\n set_alloc_info mm/kasan/common.c:437 [inline]\n __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:470\n kasan_slab_alloc include/linux/kasan.h:224 [inline]\n slab_post_alloc_hook mm/slab.h:7\n---truncated---"
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            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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              "lang": "en",
              "value": "AV:L - The UAF is reached through local paths into kernfs_remove_by_name_ns (e.g. mount\u21929p\u2192kmem_cache_create\u2192sysfs_slab_add\u2192sysfs_remove_link, or other local sysfs/cgroup teardown), not via remote packet/protocol processing.\nAC:L - The bug is a race between concurrent kernfs_remove_by_name_ns() callers on the same node; an attacker who drives both sides (e.g. concurrent mounts/teardowns) controls the race, and kernfs_drain() intentionally drops kernfs_rwsem so concurrent removers can interleave.\nPR:L - Although the syzkaller 9p trigger needs real CAP_SYS_ADMIN (9p lacks FS_USERNS_MOUNT), the vulnerable API is also used by unprivileged-reachable callers such as cgroup file removal in delegated cgroup2 subtrees and userns-reachable net/sysfs teardown; when uncertain, the higher-severity PR:L applies.\nUI:N - The attacker triggers the concurrent remove paths themselves (mounts, cgroup rmdir, sysfs-affecting netlink ops); no separate victim action is required.\nS:U - The UAF corrupts host-kernel kernfs_node slab state within the same OS security authority; this is local privilege-escalation class impact, not a VM escape or IOMMU/sandbox boundary cross.\nC:H - KASAN shows a use-after-free read of a freed kernfs_node (128-byte slab object); per guidance a UAF enables heap reuse/spray and arbitrary kernel memory disclosure.\nI:H - The same freed kernfs_node can be reclaimed and corrupted to obtain arbitrary write / control-flow hijack primitives, which is Integrity High for use-after-free.\nA:H - The UAF produces KASAN-detected slab-use-after-free and kernel oops/panic even when not fully exploited, so availability impact is High."
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          "value": "This CVE ID has been rejected or withdrawn by its CVE Numbering Authority."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50487",
    "datePublished": "2025-10-04T15:16:44.462Z",
    "dateRejected": "2025-10-10T15:34:42.519Z",
    "dateReserved": "2025-10-04T15:13:33.468Z",
    "dateUpdated": "2025-10-10T15:34:42.519Z",
    "state": "REJECTED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}