CVE-2024-49867 (GCVE-0-2024-49867)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-01-05 10:54
VLAI?
Title
btrfs: wait for fixup workers before stopping cleaner kthread during umount
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: wait for fixup workers before stopping cleaner kthread during umount During unmount, at close_ctree(), we have the following steps in this order: 1) Park the cleaner kthread - this doesn't destroy the kthread, it basically halts its execution (wake ups against it work but do nothing); 2) We stop the cleaner kthread - this results in freeing the respective struct task_struct; 3) We call btrfs_stop_all_workers() which waits for any jobs running in all the work queues and then free the work queues. Syzbot reported a case where a fixup worker resulted in a crash when doing a delayed iput on its inode while attempting to wake up the cleaner at btrfs_add_delayed_iput(), because the task_struct of the cleaner kthread was already freed. This can happen during unmount because we don't wait for any fixup workers still running before we call kthread_stop() against the cleaner kthread, which stops and free all its resources. Fix this by waiting for any fixup workers at close_ctree() before we call kthread_stop() against the cleaner and run pending delayed iputs. The stack traces reported by syzbot were the following: BUG: KASAN: slab-use-after-free in __lock_acquire+0x77/0x2050 kernel/locking/lockdep.c:5065 Read of size 8 at addr ffff8880272a8a18 by task kworker/u8:3/52 CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.12.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: btrfs-fixup btrfs_work_helper Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 __lock_acquire+0x77/0x2050 kernel/locking/lockdep.c:5065 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline] try_to_wake_up+0xb0/0x1480 kernel/sched/core.c:4154 btrfs_writepage_fixup_worker+0xc16/0xdf0 fs/btrfs/inode.c:2842 btrfs_work_helper+0x390/0xc50 fs/btrfs/async-thread.c:314 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> Allocated by task 2: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:247 [inline] slab_post_alloc_hook mm/slub.c:4086 [inline] slab_alloc_node mm/slub.c:4135 [inline] kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4187 alloc_task_struct_node kernel/fork.c:180 [inline] dup_task_struct+0x57/0x8c0 kernel/fork.c:1107 copy_process+0x5d1/0x3d50 kernel/fork.c:2206 kernel_clone+0x223/0x880 kernel/fork.c:2787 kernel_thread+0x1bc/0x240 kernel/fork.c:2849 create_kthread kernel/kthread.c:412 [inline] kthreadd+0x60d/0x810 kernel/kthread.c:765 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 61: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_h ---truncated---
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7a97311de48d56af6db4c5819f95faf9b0b23b1a , < a71349b692ab34ea197949e13e3cc42570fe73d9 (git)
Affected: f4b1363cae43fef7c86c993b7ca7fe7d546b3c68 , < 70b60c8d9b42763d6629e44f448aa5d8ae477d61 (git)
Affected: f4b1363cae43fef7c86c993b7ca7fe7d546b3c68 , < 4c98fe0dfa2ae83c4631699695506d8941db4bfe (git)
Affected: f4b1363cae43fef7c86c993b7ca7fe7d546b3c68 , < 9da40aea63f8769f28afb91aea0fac4cf6fbbb65 (git)
Affected: f4b1363cae43fef7c86c993b7ca7fe7d546b3c68 , < ed87190e9d9c80aad220fb6b0b03a84d22e2c95b (git)
Affected: f4b1363cae43fef7c86c993b7ca7fe7d546b3c68 , < bf0de0f9a0544c11f96f93206da04ab87dcea1f4 (git)
Affected: f4b1363cae43fef7c86c993b7ca7fe7d546b3c68 , < 65d11eb276836d49003a8060cf31fa2284ad1047 (git)
Affected: f4b1363cae43fef7c86c993b7ca7fe7d546b3c68 , < 41fd1e94066a815a7ab0a7025359e9b40e4b3576 (git)
Affected: 6026fd9da213daab95469356fe7fdcf29ae1a296 (git)
Create a notification for this product.
    Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.55 , ≤ 6.6.* (semver)
Unaffected: 6.10.14 , ≤ 6.10.* (semver)
Unaffected: 6.11.3 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: wait for fixup workers before stopping cleaner kthread during umount\n\nDuring unmount, at close_ctree(), we have the following steps in this order:\n\n1) Park the cleaner kthread - this doesn\u0027t destroy the kthread, it basically\n   halts its execution (wake ups against it work but do nothing);\n\n2) We stop the cleaner kthread - this results in freeing the respective\n   struct task_struct;\n\n3) We call btrfs_stop_all_workers() which waits for any jobs running in all\n   the work queues and then free the work queues.\n\nSyzbot reported a case where a fixup worker resulted in a crash when doing\na delayed iput on its inode while attempting to wake up the cleaner at\nbtrfs_add_delayed_iput(), because the task_struct of the cleaner kthread\nwas already freed. This can happen during unmount because we don\u0027t wait\nfor any fixup workers still running before we call kthread_stop() against\nthe cleaner kthread, which stops and free all its resources.\n\nFix this by waiting for any fixup workers at close_ctree() before we call\nkthread_stop() against the cleaner and run pending delayed iputs.\n\nThe stack traces reported by syzbot were the following:\n\n  BUG: KASAN: slab-use-after-free in __lock_acquire+0x77/0x2050 kernel/locking/lockdep.c:5065\n  Read of size 8 at addr ffff8880272a8a18 by task kworker/u8:3/52\n\n  CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.12.0-rc1-syzkaller #0\n  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\n  Workqueue: btrfs-fixup btrfs_work_helper\n  Call Trace:\n   \u003cTASK\u003e\n   __dump_stack lib/dump_stack.c:94 [inline]\n   dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n   print_address_description mm/kasan/report.c:377 [inline]\n   print_report+0x169/0x550 mm/kasan/report.c:488\n   kasan_report+0x143/0x180 mm/kasan/report.c:601\n   __lock_acquire+0x77/0x2050 kernel/locking/lockdep.c:5065\n   lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825\n   __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]\n   _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162\n   class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]\n   try_to_wake_up+0xb0/0x1480 kernel/sched/core.c:4154\n   btrfs_writepage_fixup_worker+0xc16/0xdf0 fs/btrfs/inode.c:2842\n   btrfs_work_helper+0x390/0xc50 fs/btrfs/async-thread.c:314\n   process_one_work kernel/workqueue.c:3229 [inline]\n   process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310\n   worker_thread+0x870/0xd30 kernel/workqueue.c:3391\n   kthread+0x2f0/0x390 kernel/kthread.c:389\n   ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n   ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n   \u003c/TASK\u003e\n\n  Allocated by task 2:\n   kasan_save_stack mm/kasan/common.c:47 [inline]\n   kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n   unpoison_slab_object mm/kasan/common.c:319 [inline]\n   __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345\n   kasan_slab_alloc include/linux/kasan.h:247 [inline]\n   slab_post_alloc_hook mm/slub.c:4086 [inline]\n   slab_alloc_node mm/slub.c:4135 [inline]\n   kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4187\n   alloc_task_struct_node kernel/fork.c:180 [inline]\n   dup_task_struct+0x57/0x8c0 kernel/fork.c:1107\n   copy_process+0x5d1/0x3d50 kernel/fork.c:2206\n   kernel_clone+0x223/0x880 kernel/fork.c:2787\n   kernel_thread+0x1bc/0x240 kernel/fork.c:2849\n   create_kthread kernel/kthread.c:412 [inline]\n   kthreadd+0x60d/0x810 kernel/kthread.c:765\n   ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n   ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n\n  Freed by task 61:\n   kasan_save_stack mm/kasan/common.c:47 [inline]\n   kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n   kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\n   poison_slab_object mm/kasan/common.c:247 [inline]\n   __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264\n   kasan_slab_free include/linux/kasan.h:230 [inline]\n   slab_free_h\n---truncated---"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
          "url": "https://git.kernel.org/stable/c/a71349b692ab34ea197949e13e3cc42570fe73d9"
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          "url": "https://git.kernel.org/stable/c/70b60c8d9b42763d6629e44f448aa5d8ae477d61"
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          "url": "https://git.kernel.org/stable/c/4c98fe0dfa2ae83c4631699695506d8941db4bfe"
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        {
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        {
          "url": "https://git.kernel.org/stable/c/41fd1e94066a815a7ab0a7025359e9b40e4b3576"
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      "title": "btrfs: wait for fixup workers before stopping cleaner kthread during umount",
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    "dateReserved": "2024-10-21T12:17:06.018Z",
    "dateUpdated": "2026-01-05T10:54:09.222Z",
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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:22:34.501Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-49867\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:47:28.241887Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:47:31.416Z\"}}], \"cna\": {\"title\": \"btrfs: wait for fixup workers before stopping cleaner kthread during umount\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7a97311de48d56af6db4c5819f95faf9b0b23b1a\", \"lessThan\": \"a71349b692ab34ea197949e13e3cc42570fe73d9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f4b1363cae43fef7c86c993b7ca7fe7d546b3c68\", \"lessThan\": \"70b60c8d9b42763d6629e44f448aa5d8ae477d61\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f4b1363cae43fef7c86c993b7ca7fe7d546b3c68\", \"lessThan\": \"4c98fe0dfa2ae83c4631699695506d8941db4bfe\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f4b1363cae43fef7c86c993b7ca7fe7d546b3c68\", \"lessThan\": \"9da40aea63f8769f28afb91aea0fac4cf6fbbb65\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f4b1363cae43fef7c86c993b7ca7fe7d546b3c68\", \"lessThan\": \"ed87190e9d9c80aad220fb6b0b03a84d22e2c95b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f4b1363cae43fef7c86c993b7ca7fe7d546b3c68\", \"lessThan\": \"bf0de0f9a0544c11f96f93206da04ab87dcea1f4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f4b1363cae43fef7c86c993b7ca7fe7d546b3c68\", \"lessThan\": \"65d11eb276836d49003a8060cf31fa2284ad1047\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f4b1363cae43fef7c86c993b7ca7fe7d546b3c68\", \"lessThan\": \"41fd1e94066a815a7ab0a7025359e9b40e4b3576\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6026fd9da213daab95469356fe7fdcf29ae1a296\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/btrfs/disk-io.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.285\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.55\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/btrfs/disk-io.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a71349b692ab34ea197949e13e3cc42570fe73d9\"}, {\"url\": \"https://git.kernel.org/stable/c/70b60c8d9b42763d6629e44f448aa5d8ae477d61\"}, {\"url\": \"https://git.kernel.org/stable/c/4c98fe0dfa2ae83c4631699695506d8941db4bfe\"}, {\"url\": \"https://git.kernel.org/stable/c/9da40aea63f8769f28afb91aea0fac4cf6fbbb65\"}, {\"url\": \"https://git.kernel.org/stable/c/ed87190e9d9c80aad220fb6b0b03a84d22e2c95b\"}, {\"url\": \"https://git.kernel.org/stable/c/bf0de0f9a0544c11f96f93206da04ab87dcea1f4\"}, {\"url\": \"https://git.kernel.org/stable/c/65d11eb276836d49003a8060cf31fa2284ad1047\"}, {\"url\": \"https://git.kernel.org/stable/c/41fd1e94066a815a7ab0a7025359e9b40e4b3576\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: wait for fixup workers before stopping cleaner kthread during umount\\n\\nDuring unmount, at close_ctree(), we have the following steps in this order:\\n\\n1) Park the cleaner kthread - this doesn\u0027t destroy the kthread, it basically\\n   halts its execution (wake ups against it work but do nothing);\\n\\n2) We stop the cleaner kthread - this results in freeing the respective\\n   struct task_struct;\\n\\n3) We call btrfs_stop_all_workers() which waits for any jobs running in all\\n   the work queues and then free the work queues.\\n\\nSyzbot reported a case where a fixup worker resulted in a crash when doing\\na delayed iput on its inode while attempting to wake up the cleaner at\\nbtrfs_add_delayed_iput(), because the task_struct of the cleaner kthread\\nwas already freed. This can happen during unmount because we don\u0027t wait\\nfor any fixup workers still running before we call kthread_stop() against\\nthe cleaner kthread, which stops and free all its resources.\\n\\nFix this by waiting for any fixup workers at close_ctree() before we call\\nkthread_stop() against the cleaner and run pending delayed iputs.\\n\\nThe stack traces reported by syzbot were the following:\\n\\n  BUG: KASAN: slab-use-after-free in __lock_acquire+0x77/0x2050 kernel/locking/lockdep.c:5065\\n  Read of size 8 at addr ffff8880272a8a18 by task kworker/u8:3/52\\n\\n  CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.12.0-rc1-syzkaller #0\\n  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\\n  Workqueue: btrfs-fixup btrfs_work_helper\\n  Call Trace:\\n   \u003cTASK\u003e\\n   __dump_stack lib/dump_stack.c:94 [inline]\\n   dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\\n   print_address_description mm/kasan/report.c:377 [inline]\\n   print_report+0x169/0x550 mm/kasan/report.c:488\\n   kasan_report+0x143/0x180 mm/kasan/report.c:601\\n   __lock_acquire+0x77/0x2050 kernel/locking/lockdep.c:5065\\n   lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825\\n   __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]\\n   _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162\\n   class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]\\n   try_to_wake_up+0xb0/0x1480 kernel/sched/core.c:4154\\n   btrfs_writepage_fixup_worker+0xc16/0xdf0 fs/btrfs/inode.c:2842\\n   btrfs_work_helper+0x390/0xc50 fs/btrfs/async-thread.c:314\\n   process_one_work kernel/workqueue.c:3229 [inline]\\n   process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310\\n   worker_thread+0x870/0xd30 kernel/workqueue.c:3391\\n   kthread+0x2f0/0x390 kernel/kthread.c:389\\n   ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\\n   ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\\n   \u003c/TASK\u003e\\n\\n  Allocated by task 2:\\n   kasan_save_stack mm/kasan/common.c:47 [inline]\\n   kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n   unpoison_slab_object mm/kasan/common.c:319 [inline]\\n   __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345\\n   kasan_slab_alloc include/linux/kasan.h:247 [inline]\\n   slab_post_alloc_hook mm/slub.c:4086 [inline]\\n   slab_alloc_node mm/slub.c:4135 [inline]\\n   kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4187\\n   alloc_task_struct_node kernel/fork.c:180 [inline]\\n   dup_task_struct+0x57/0x8c0 kernel/fork.c:1107\\n   copy_process+0x5d1/0x3d50 kernel/fork.c:2206\\n   kernel_clone+0x223/0x880 kernel/fork.c:2787\\n   kernel_thread+0x1bc/0x240 kernel/fork.c:2849\\n   create_kthread kernel/kthread.c:412 [inline]\\n   kthreadd+0x60d/0x810 kernel/kthread.c:765\\n   ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\\n   ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\\n\\n  Freed by task 61:\\n   kasan_save_stack mm/kasan/common.c:47 [inline]\\n   kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n   kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\\n   poison_slab_object mm/kasan/common.c:247 [inline]\\n   __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264\\n   kasan_slab_free include/linux/kasan.h:230 [inline]\\n   slab_free_h\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"5.4.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.55\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.14\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.3\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"5.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.5.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:54:09.222Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49867\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:54:09.222Z\", \"dateReserved\": \"2024-10-21T12:17:06.018Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T18:01:09.962Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

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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.



Detection rules are retrieved from Rulezet.