Vulnerability-Lookup

CERTFR-2024-AVI-1108

Vulnerability from certfr_avis - Published: 2024-12-27 - Updated: 2024-12-27

De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None

Impacted products

Vendor	Product	Description
Ubuntu	Ubuntu	Ubuntu 18.04 ESM
Ubuntu	Ubuntu	Ubuntu 20.04 LTS
Ubuntu	Ubuntu	Ubuntu 22.04 LTS

References

Title

Publication Time

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

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-23 15:53

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.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

10 references

URL	Tags
https://git.kernel.org/stable/c/a71349b692ab34ea1…
https://git.kernel.org/stable/c/70b60c8d9b42763d6…
https://git.kernel.org/stable/c/4c98fe0dfa2ae83c4…
https://git.kernel.org/stable/c/9da40aea63f8769f2…
https://git.kernel.org/stable/c/ed87190e9d9c80aad…
https://git.kernel.org/stable/c/bf0de0f9a0544c11f…
https://git.kernel.org/stable/c/65d11eb276836d490…
https://git.kernel.org/stable/c/41fd1e94066a815a7…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 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) Affected: 5.4.22 , < 5.4.285 (semver) Affected: 5.5.6 , < 5.6 (semver)
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)

Show details on NVD website

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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---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:53:58.592Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
        },
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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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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-49867",
    "datePublished": "2024-10-21T18:01:09.962Z",
    "dateReserved": "2024-10-21T12:17:06.018Z",
    "dateUpdated": "2026-05-23T15:53:58.592Z",
    "state": "PUBLISHED"
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}

CVE-2024-49868 (GCVE-0-2024-49868)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:40

Title

btrfs: fix a NULL pointer dereference when failed to start a new trasacntion

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix a NULL pointer dereference when failed to start a new trasacntion [BUG] Syzbot reported a NULL pointer dereference with the following crash: FAULT_INJECTION: forcing a failure. start_transaction+0x830/0x1670 fs/btrfs/transaction.c:676 prepare_to_relocate+0x31f/0x4c0 fs/btrfs/relocation.c:3642 relocate_block_group+0x169/0xd20 fs/btrfs/relocation.c:3678 ... BTRFS info (device loop0): balance: ended with status: -12 Oops: general protection fault, probably for non-canonical address 0xdffffc00000000cc: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000660-0x0000000000000667] RIP: 0010:btrfs_update_reloc_root+0x362/0xa80 fs/btrfs/relocation.c:926 Call Trace: <TASK> commit_fs_roots+0x2ee/0x720 fs/btrfs/transaction.c:1496 btrfs_commit_transaction+0xfaf/0x3740 fs/btrfs/transaction.c:2430 del_balance_item fs/btrfs/volumes.c:3678 [inline] reset_balance_state+0x25e/0x3c0 fs/btrfs/volumes.c:3742 btrfs_balance+0xead/0x10c0 fs/btrfs/volumes.c:4574 btrfs_ioctl_balance+0x493/0x7c0 fs/btrfs/ioctl.c:3673 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f [CAUSE] The allocation failure happens at the start_transaction() inside prepare_to_relocate(), and during the error handling we call unset_reloc_control(), which makes fs_info->balance_ctl to be NULL. Then we continue the error path cleanup in btrfs_balance() by calling reset_balance_state() which will call del_balance_item() to fully delete the balance item in the root tree. However during the small window between set_reloc_contrl() and unset_reloc_control(), we can have a subvolume tree update and created a reloc_root for that subvolume. Then we go into the final btrfs_commit_transaction() of del_balance_item(), and into btrfs_update_reloc_root() inside commit_fs_roots(). That function checks if fs_info->reloc_ctl is in the merge_reloc_tree stage, but since fs_info->reloc_ctl is NULL, it results a NULL pointer dereference. [FIX] Just add extra check on fs_info->reloc_ctl inside btrfs_update_reloc_root(), before checking fs_info->reloc_ctl->merge_reloc_tree. That DEAD_RELOC_TREE handling is to prevent further modification to the reloc tree during merge stage, but since there is no reloc_ctl at all, we do not need to bother that.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

10 references

URL	Tags
https://git.kernel.org/stable/c/1282f001cbf56e5dd…
https://git.kernel.org/stable/c/d73d48acf36f57362…
https://git.kernel.org/stable/c/37fee9c220b92c3b7…
https://git.kernel.org/stable/c/d13249c0df7aab885…
https://git.kernel.org/stable/c/7ad0c5868f2f04186…
https://git.kernel.org/stable/c/dc02c1440705e3451…
https://git.kernel.org/stable/c/39356ec0e319ed076…
https://git.kernel.org/stable/c/c3b47f49e83197e8d…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 3fd0a5585eb98e074fb9934549c8d85c49756c0d , < 1282f001cbf56e5dd6e90a18e205a566793f4be0 (git) Affected: 3fd0a5585eb98e074fb9934549c8d85c49756c0d , < d73d48acf36f57362df7e4f9d76568168bf5e944 (git) Affected: 3fd0a5585eb98e074fb9934549c8d85c49756c0d , < 37fee9c220b92c3b7bf22b51c51dde5364e7590b (git) Affected: 3fd0a5585eb98e074fb9934549c8d85c49756c0d , < d13249c0df7aab885acb149695f82c54c0822a70 (git) Affected: 3fd0a5585eb98e074fb9934549c8d85c49756c0d , < 7ad0c5868f2f0418619089513d95230c66cb7eb4 (git) Affected: 3fd0a5585eb98e074fb9934549c8d85c49756c0d , < dc02c1440705e3451abd1c2c8114a5c1bb188e9f (git) Affected: 3fd0a5585eb98e074fb9934549c8d85c49756c0d , < 39356ec0e319ed07627b3a0f402d0608546509e6 (git) Affected: 3fd0a5585eb98e074fb9934549c8d85c49756c0d , < c3b47f49e83197e8dffd023ec568403bcdbb774b (git)
Linux	Linux	Affected: 2.6.35 Unaffected: 0 , < 2.6.35 (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)

Show details on NVD website

JSON

To clipboard

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    "cveId": "CVE-2024-49868",
    "datePublished": "2024-10-21T18:01:10.722Z",
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    "dateUpdated": "2026-05-11T20:40:47.334Z",
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CVE-2024-49871 (GCVE-0-2024-49871)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:40

Title

Input: adp5589-keys - fix NULL pointer dereference

Summary

In the Linux kernel, the following vulnerability has been resolved: Input: adp5589-keys - fix NULL pointer dereference We register a devm action to call adp5589_clear_config() and then pass the i2c client as argument so that we can call i2c_get_clientdata() in order to get our device object. However, i2c_set_clientdata() is only being set at the end of the probe function which means that we'll get a NULL pointer dereference in case the probe function fails early.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/4449fedb8a710043f…
https://git.kernel.org/stable/c/34e304cc53ae5d3c8…
https://git.kernel.org/stable/c/7c3f04223aaf82489…
https://git.kernel.org/stable/c/9a38791ee79bd17d2…
https://git.kernel.org/stable/c/122b160561f642970…
https://git.kernel.org/stable/c/fb5cc65f973661241…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 30df385e35a48f773b85117fc490152c2395e45b , < 4449fedb8a710043fc0925409eba844c192d4337 (git) Affected: 30df385e35a48f773b85117fc490152c2395e45b , < 34e304cc53ae5d3c8e3f08b41dd11e0d4f3e01ed (git) Affected: 30df385e35a48f773b85117fc490152c2395e45b , < 7c3f04223aaf82489472d614c6decee5a1ce8d7f (git) Affected: 30df385e35a48f773b85117fc490152c2395e45b , < 9a38791ee79bd17d225c15a6d1479448be127a59 (git) Affected: 30df385e35a48f773b85117fc490152c2395e45b , < 122b160561f6429701a0559a0f39b0ae309488c6 (git) Affected: 30df385e35a48f773b85117fc490152c2395e45b , < fb5cc65f973661241e4a2b7390b429aa7b330c69 (git)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (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)

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2024-49871",
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CVE-2024-49875 (GCVE-0-2024-49875)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:40

Title

nfsd: map the EBADMSG to nfserr_io to avoid warning

Summary

In the Linux kernel, the following vulnerability has been resolved: nfsd: map the EBADMSG to nfserr_io to avoid warning Ext4 will throw -EBADMSG through ext4_readdir when a checksum error occurs, resulting in the following WARNING. Fix it by mapping EBADMSG to nfserr_io. nfsd_buffered_readdir iterate_dir // -EBADMSG -74 ext4_readdir // .iterate_shared ext4_dx_readdir ext4_htree_fill_tree htree_dirblock_to_tree ext4_read_dirblock __ext4_read_dirblock ext4_dirblock_csum_verify warn_no_space_for_csum __warn_no_space_for_csum return ERR_PTR(-EFSBADCRC) // -EBADMSG -74 nfserrno // WARNING [ 161.115610] ------------[ cut here ]------------ [ 161.116465] nfsd: non-standard errno: -74 [ 161.117315] WARNING: CPU: 1 PID: 780 at fs/nfsd/nfsproc.c:878 nfserrno+0x9d/0xd0 [ 161.118596] Modules linked in: [ 161.119243] CPU: 1 PID: 780 Comm: nfsd Not tainted 5.10.0-00014-g79679361fd5d #138 [ 161.120684] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qe mu.org 04/01/2014 [ 161.123601] RIP: 0010:nfserrno+0x9d/0xd0 [ 161.124676] Code: 0f 87 da 30 dd 00 83 e3 01 b8 00 00 00 05 75 d7 44 89 ee 48 c7 c7 c0 57 24 98 89 44 24 04 c6 05 ce 2b 61 03 01 e8 99 20 d8 00 <0f> 0b 8b 44 24 04 eb b5 4c 89 e6 48 c7 c7 a0 6d a4 99 e8 cc 15 33 [ 161.127797] RSP: 0018:ffffc90000e2f9c0 EFLAGS: 00010286 [ 161.128794] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 161.130089] RDX: 1ffff1103ee16f6d RSI: 0000000000000008 RDI: fffff520001c5f2a [ 161.131379] RBP: 0000000000000022 R08: 0000000000000001 R09: ffff8881f70c1827 [ 161.132664] R10: ffffed103ee18304 R11: 0000000000000001 R12: 0000000000000021 [ 161.133949] R13: 00000000ffffffb6 R14: ffff8881317c0000 R15: ffffc90000e2fbd8 [ 161.135244] FS: 0000000000000000(0000) GS:ffff8881f7080000(0000) knlGS:0000000000000000 [ 161.136695] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 161.137761] CR2: 00007fcaad70b348 CR3: 0000000144256006 CR4: 0000000000770ee0 [ 161.139041] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 161.140291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 161.141519] PKRU: 55555554 [ 161.142076] Call Trace: [ 161.142575] ? __warn+0x9b/0x140 [ 161.143229] ? nfserrno+0x9d/0xd0 [ 161.143872] ? report_bug+0x125/0x150 [ 161.144595] ? handle_bug+0x41/0x90 [ 161.145284] ? exc_invalid_op+0x14/0x70 [ 161.146009] ? asm_exc_invalid_op+0x12/0x20 [ 161.146816] ? nfserrno+0x9d/0xd0 [ 161.147487] nfsd_buffered_readdir+0x28b/0x2b0 [ 161.148333] ? nfsd4_encode_dirent_fattr+0x380/0x380 [ 161.149258] ? nfsd_buffered_filldir+0xf0/0xf0 [ 161.150093] ? wait_for_concurrent_writes+0x170/0x170 [ 161.151004] ? generic_file_llseek_size+0x48/0x160 [ 161.151895] nfsd_readdir+0x132/0x190 [ 161.152606] ? nfsd4_encode_dirent_fattr+0x380/0x380 [ 161.153516] ? nfsd_unlink+0x380/0x380 [ 161.154256] ? override_creds+0x45/0x60 [ 161.155006] nfsd4_encode_readdir+0x21a/0x3d0 [ 161.155850] ? nfsd4_encode_readlink+0x210/0x210 [ 161.156731] ? write_bytes_to_xdr_buf+0x97/0xe0 [ 161.157598] ? __write_bytes_to_xdr_buf+0xd0/0xd0 [ 161.158494] ? lock_downgrade+0x90/0x90 [ 161.159232] ? nfs4svc_decode_voidarg+0x10/0x10 [ 161.160092] nfsd4_encode_operation+0x15a/0x440 [ 161.160959] nfsd4_proc_compound+0x718/0xe90 [ 161.161818] nfsd_dispatch+0x18e/0x2c0 [ 161.162586] svc_process_common+0x786/0xc50 [ 161.163403] ? nfsd_svc+0x380/0x380 [ 161.164137] ? svc_printk+0x160/0x160 [ 161.164846] ? svc_xprt_do_enqueue.part.0+0x365/0x380 [ 161.165808] ? nfsd_svc+0x380/0x380 [ 161.166523] ? rcu_is_watching+0x23/0x40 [ 161.167309] svc_process+0x1a5/0x200 [ 161.168019] nfsd+0x1f5/0x380 [ 161.168663] ? nfsd_shutdown_threads+0x260/0x260 [ 161.169554] kthread+0x1c4/0x210 [ 161.170224] ? kthread_insert_work_sanity_check+0x80/0x80 [ 161.171246] ret_from_fork+0x1f/0x30

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

9 references

URL	Tags
https://git.kernel.org/stable/c/0ea4333c679f333e2…
https://git.kernel.org/stable/c/825789ca946025431…
https://git.kernel.org/stable/c/6fe058502f8864649…
https://git.kernel.org/stable/c/f7d8ee9db94372b82…
https://git.kernel.org/stable/c/c76005adfa93d1a02…
https://git.kernel.org/stable/c/e9cfecca22a36b927…
https://git.kernel.org/stable/c/340e61e44c1d2a15c…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 6a797d2737838906f2ea0a31686e87c3151e21ca , < 0ea4333c679f333e23956de743ad17387819d3f2 (git) Affected: 6a797d2737838906f2ea0a31686e87c3151e21ca , < 825789ca94602543101045ad3aad19b2b60c6b2a (git) Affected: 6a797d2737838906f2ea0a31686e87c3151e21ca , < 6fe058502f8864649c3d614b06b2235223798f48 (git) Affected: 6a797d2737838906f2ea0a31686e87c3151e21ca , < f7d8ee9db94372b8235f5f22bb24381891594c42 (git) Affected: 6a797d2737838906f2ea0a31686e87c3151e21ca , < c76005adfa93d1a027433331252422078750321f (git) Affected: 6a797d2737838906f2ea0a31686e87c3151e21ca , < e9cfecca22a36b927a440abc6307efb9e138fed5 (git) Affected: 6a797d2737838906f2ea0a31686e87c3151e21ca , < 340e61e44c1d2a15c42ec72ade9195ad525fd048 (git)
Linux	Linux	Affected: 4.4 Unaffected: 0 , < 4.4 (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\nnfsd: map the EBADMSG to nfserr_io to avoid warning\n\nExt4 will throw -EBADMSG through ext4_readdir when a checksum error\noccurs, resulting in the following WARNING.\n\nFix it by mapping EBADMSG to nfserr_io.\n\nnfsd_buffered_readdir\n iterate_dir // -EBADMSG -74\n  ext4_readdir // .iterate_shared\n   ext4_dx_readdir\n    ext4_htree_fill_tree\n     htree_dirblock_to_tree\n      ext4_read_dirblock\n       __ext4_read_dirblock\n        ext4_dirblock_csum_verify\n         warn_no_space_for_csum\n          __warn_no_space_for_csum\n        return ERR_PTR(-EFSBADCRC) // -EBADMSG -74\n nfserrno // WARNING\n\n[  161.115610] ------------[ cut here ]------------\n[  161.116465] nfsd: non-standard errno: -74\n[  161.117315] WARNING: CPU: 1 PID: 780 at fs/nfsd/nfsproc.c:878 nfserrno+0x9d/0xd0\n[  161.118596] Modules linked in:\n[  161.119243] CPU: 1 PID: 780 Comm: nfsd Not tainted 5.10.0-00014-g79679361fd5d #138\n[  161.120684] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qe\nmu.org 04/01/2014\n[  161.123601] RIP: 0010:nfserrno+0x9d/0xd0\n[  161.124676] Code: 0f 87 da 30 dd 00 83 e3 01 b8 00 00 00 05 75 d7 44 89 ee 48 c7 c7 c0 57 24 98 89 44 24 04 c6\n 05 ce 2b 61 03 01 e8 99 20 d8 00 \u003c0f\u003e 0b 8b 44 24 04 eb b5 4c 89 e6 48 c7 c7 a0 6d a4 99 e8 cc 15 33\n[  161.127797] RSP: 0018:ffffc90000e2f9c0 EFLAGS: 00010286\n[  161.128794] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\n[  161.130089] RDX: 1ffff1103ee16f6d RSI: 0000000000000008 RDI: fffff520001c5f2a\n[  161.131379] RBP: 0000000000000022 R08: 0000000000000001 R09: ffff8881f70c1827\n[  161.132664] R10: ffffed103ee18304 R11: 0000000000000001 R12: 0000000000000021\n[  161.133949] R13: 00000000ffffffb6 R14: ffff8881317c0000 R15: ffffc90000e2fbd8\n[  161.135244] FS:  0000000000000000(0000) GS:ffff8881f7080000(0000) knlGS:0000000000000000\n[  161.136695] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  161.137761] CR2: 00007fcaad70b348 CR3: 0000000144256006 CR4: 0000000000770ee0\n[  161.139041] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  161.140291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[  161.141519] PKRU: 55555554\n[  161.142076] Call Trace:\n[  161.142575]  ? __warn+0x9b/0x140\n[  161.143229]  ? nfserrno+0x9d/0xd0\n[  161.143872]  ? report_bug+0x125/0x150\n[  161.144595]  ? handle_bug+0x41/0x90\n[  161.145284]  ? exc_invalid_op+0x14/0x70\n[  161.146009]  ? asm_exc_invalid_op+0x12/0x20\n[  161.146816]  ? nfserrno+0x9d/0xd0\n[  161.147487]  nfsd_buffered_readdir+0x28b/0x2b0\n[  161.148333]  ? nfsd4_encode_dirent_fattr+0x380/0x380\n[  161.149258]  ? nfsd_buffered_filldir+0xf0/0xf0\n[  161.150093]  ? wait_for_concurrent_writes+0x170/0x170\n[  161.151004]  ? generic_file_llseek_size+0x48/0x160\n[  161.151895]  nfsd_readdir+0x132/0x190\n[  161.152606]  ? nfsd4_encode_dirent_fattr+0x380/0x380\n[  161.153516]  ? nfsd_unlink+0x380/0x380\n[  161.154256]  ? override_creds+0x45/0x60\n[  161.155006]  nfsd4_encode_readdir+0x21a/0x3d0\n[  161.155850]  ? nfsd4_encode_readlink+0x210/0x210\n[  161.156731]  ? write_bytes_to_xdr_buf+0x97/0xe0\n[  161.157598]  ? __write_bytes_to_xdr_buf+0xd0/0xd0\n[  161.158494]  ? lock_downgrade+0x90/0x90\n[  161.159232]  ? nfs4svc_decode_voidarg+0x10/0x10\n[  161.160092]  nfsd4_encode_operation+0x15a/0x440\n[  161.160959]  nfsd4_proc_compound+0x718/0xe90\n[  161.161818]  nfsd_dispatch+0x18e/0x2c0\n[  161.162586]  svc_process_common+0x786/0xc50\n[  161.163403]  ? nfsd_svc+0x380/0x380\n[  161.164137]  ? svc_printk+0x160/0x160\n[  161.164846]  ? svc_xprt_do_enqueue.part.0+0x365/0x380\n[  161.165808]  ? nfsd_svc+0x380/0x380\n[  161.166523]  ? rcu_is_watching+0x23/0x40\n[  161.167309]  svc_process+0x1a5/0x200\n[  161.168019]  nfsd+0x1f5/0x380\n[  161.168663]  ? nfsd_shutdown_threads+0x260/0x260\n[  161.169554]  kthread+0x1c4/0x210\n[  161.170224]  ? kthread_insert_work_sanity_check+0x80/0x80\n[  161.171246]  ret_from_fork+0x1f/0x30"
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        "dateUpdated": "2026-05-11T20:40:55.690Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0ea4333c679f333e23956de743ad17387819d3f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/825789ca94602543101045ad3aad19b2b60c6b2a"
        },
        {
          "url": "https://git.kernel.org/stable/c/6fe058502f8864649c3d614b06b2235223798f48"
        },
        {
          "url": "https://git.kernel.org/stable/c/f7d8ee9db94372b8235f5f22bb24381891594c42"
        },
        {
          "url": "https://git.kernel.org/stable/c/c76005adfa93d1a027433331252422078750321f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e9cfecca22a36b927a440abc6307efb9e138fed5"
        },
        {
          "url": "https://git.kernel.org/stable/c/340e61e44c1d2a15c42ec72ade9195ad525fd048"
        }
      ],
      "title": "nfsd: map the EBADMSG to nfserr_io to avoid warning",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-49875",
    "datePublished": "2024-10-21T18:01:15.434Z",
    "dateReserved": "2024-10-21T12:17:06.020Z",
    "dateUpdated": "2026-05-11T20:40:55.690Z",
    "state": "PUBLISHED"
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}

CVE-2024-49877 (GCVE-0-2024-49877)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-23 15:53

Title

ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate

Summary

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate When doing cleanup, if flags without OCFS2_BH_READAHEAD, it may trigger NULL pointer dereference in the following ocfs2_set_buffer_uptodate() if bh is NULL.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

11 references

URL	Tags
https://git.kernel.org/stable/c/190d98bcd61117a78…
https://git.kernel.org/stable/c/e68c8323355e8cedf…
https://git.kernel.org/stable/c/61b84013e560382cb…
https://git.kernel.org/stable/c/df944dc46d06af65a…
https://git.kernel.org/stable/c/01cb2e751cc61ade4…
https://git.kernel.org/stable/c/d52c5652e7dcb7a06…
https://git.kernel.org/stable/c/46b1edf0536a5291a…
https://git.kernel.org/stable/c/4846e72ab5a0726e4…
https://git.kernel.org/stable/c/33b525cef4cff49e2…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 6c150df9c2e80b5cf86f5a0d98beb7390ad63bfc , < 190d98bcd61117a78fe185222d162180f061a6ca (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < e68c8323355e8cedfbe0bec7d5a39009f61640b6 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 61b84013e560382cbe7dd56758be3154d43a3988 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < df944dc46d06af65a75191183d52be017e6b9dbe (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 01cb2e751cc61ade454c9bc1aaa2eac1f8197112 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < d52c5652e7dcb7a0648bbb8642cc3e617070ab49 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 46b1edf0536a5291a8ad2337f88c926214b209d9 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 4846e72ab5a0726e49ad4188b9d9df091ae78c64 (git) Affected: cf76c78595ca87548ca5e45c862ac9e0949c4687 , < 33b525cef4cff49e216e4133cc48452e11c0391e (git) Affected: 01f93d5e36753fc4d06ec67f05ce78c9c6f2dd56 (git) Affected: 65cbd1279f4b999d56a838344a30642db24cd215 (git) Affected: 97e1db17bc1ef4c2e1789bc9323c7be44fba53f8 (git) Affected: 4.19.87 , < 4.19.323 (semver) Affected: 4.4.204 , < 4.5 (semver) Affected: 4.9.204 , < 4.10 (semver) Affected: 4.14.157 , < 4.15 (semver)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (semver) Unaffected: 4.19.323 , ≤ 4.19.* (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)

Show details on NVD website

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CVE-2024-49878 (GCVE-0-2024-49878)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:40

Title

resource: fix region_intersects() vs add_memory_driver_managed()

Summary

In the Linux kernel, the following vulnerability has been resolved: resource: fix region_intersects() vs add_memory_driver_managed() On a system with CXL memory, the resource tree (/proc/iomem) related to CXL memory may look like something as follows. 490000000-50fffffff : CXL Window 0 490000000-50fffffff : region0 490000000-50fffffff : dax0.0 490000000-50fffffff : System RAM (kmem) Because drivers/dax/kmem.c calls add_memory_driver_managed() during onlining CXL memory, which makes "System RAM (kmem)" a descendant of "CXL Window X". This confuses region_intersects(), which expects all "System RAM" resources to be at the top level of iomem_resource. This can lead to bugs. For example, when the following command line is executed to write some memory in CXL memory range via /dev/mem, $ dd if=data of=/dev/mem bs=$((1 << 10)) seek=$((0x490000000 >> 10)) count=1 dd: error writing '/dev/mem': Bad address 1+0 records in 0+0 records out 0 bytes copied, 0.0283507 s, 0.0 kB/s the command fails as expected. However, the error code is wrong. It should be "Operation not permitted" instead of "Bad address". More seriously, the /dev/mem permission checking in devmem_is_allowed() passes incorrectly. Although the accessing is prevented later because ioremap() isn't allowed to map system RAM, it is a potential security issue. During command executing, the following warning is reported in the kernel log for calling ioremap() on system RAM. ioremap on RAM at 0x0000000490000000 - 0x0000000490000fff WARNING: CPU: 2 PID: 416 at arch/x86/mm/ioremap.c:216 __ioremap_caller.constprop.0+0x131/0x35d Call Trace: memremap+0xcb/0x184 xlate_dev_mem_ptr+0x25/0x2f write_mem+0x94/0xfb vfs_write+0x128/0x26d ksys_write+0xac/0xfe do_syscall_64+0x9a/0xfd entry_SYSCALL_64_after_hwframe+0x4b/0x53 The details of command execution process are as follows. In the above resource tree, "System RAM" is a descendant of "CXL Window 0" instead of a top level resource. So, region_intersects() will report no System RAM resources in the CXL memory region incorrectly, because it only checks the top level resources. Consequently, devmem_is_allowed() will return 1 (allow access via /dev/mem) for CXL memory region incorrectly. Fortunately, ioremap() doesn't allow to map System RAM and reject the access. So, region_intersects() needs to be fixed to work correctly with the resource tree with "System RAM" not at top level as above. To fix it, if we found a unmatched resource in the top level, we will continue to search matched resources in its descendant resources. So, we will not miss any matched resources in resource tree anymore. In the new implementation, an example resource tree |------------- "CXL Window 0" ------------| |-- "System RAM" --| will behave similar as the following fake resource tree for region_intersects(, IORESOURCE_SYSTEM_RAM, ), |-- "System RAM" --||-- "CXL Window 0a" --| Where "CXL Window 0a" is part of the original "CXL Window 0" that isn't covered by "System RAM".

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

10 references

URL	Tags
https://git.kernel.org/stable/c/333fbaf6864a4ca03…
https://git.kernel.org/stable/c/1d5f85f1b7db79c75…
https://git.kernel.org/stable/c/8a6fef7d22a1d952a…
https://git.kernel.org/stable/c/4b90d2eb451b35768…
https://git.kernel.org/stable/c/393331e16ce205e03…
https://git.kernel.org/stable/c/06ff97a20b8c9e9d2…
https://git.kernel.org/stable/c/927abc5b7d6d2c2e9…
https://git.kernel.org/stable/c/b4afe4183ec77f230…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c221c0b0308fd01d9fb33a16f64d2fd95f8830a4 , < 333fbaf6864a4ca031367eb947961a1f3484d337 (git) Affected: c221c0b0308fd01d9fb33a16f64d2fd95f8830a4 , < 1d5f85f1b7db79c75c9e07d6571ce2a7bdf725c4 (git) Affected: c221c0b0308fd01d9fb33a16f64d2fd95f8830a4 , < 8a6fef7d22a1d952aed68584d3fcc0d018d2bdc3 (git) Affected: c221c0b0308fd01d9fb33a16f64d2fd95f8830a4 , < 4b90d2eb451b357681063ba4552b10b39d7ad885 (git) Affected: c221c0b0308fd01d9fb33a16f64d2fd95f8830a4 , < 393331e16ce205e036e58b3d8ca4ee2e635f21d9 (git) Affected: c221c0b0308fd01d9fb33a16f64d2fd95f8830a4 , < 06ff97a20b8c9e9d256b0d2c3e87f78f8ccea3de (git) Affected: c221c0b0308fd01d9fb33a16f64d2fd95f8830a4 , < 927abc5b7d6d2c2e936bec5a2f71d9512c5e72f7 (git) Affected: c221c0b0308fd01d9fb33a16f64d2fd95f8830a4 , < b4afe4183ec77f230851ea139d91e5cf2644c68b (git)
Linux	Linux	Affected: 5.1 Unaffected: 0 , < 5.1 (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)

Show details on NVD website

JSON

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CVE-2024-49879 (GCVE-0-2024-49879)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:41

Title

drm: omapdrm: Add missing check for alloc_ordered_workqueue

Summary

In the Linux kernel, the following vulnerability has been resolved: drm: omapdrm: Add missing check for alloc_ordered_workqueue As it may return NULL pointer and cause NULL pointer dereference. Add check for the return value of alloc_ordered_workqueue.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

10 references

URL	Tags
https://git.kernel.org/stable/c/c17a4f52fa3c3dac2…
https://git.kernel.org/stable/c/2bda89735199683b0…
https://git.kernel.org/stable/c/e60b0d3b5aa2e8d93…
https://git.kernel.org/stable/c/f37a1d9e5e22d5489…
https://git.kernel.org/stable/c/b57b53e8ffcdfda87…
https://git.kernel.org/stable/c/0d71916694aceb207…
https://git.kernel.org/stable/c/334de68eda2b99892…
https://git.kernel.org/stable/c/e794b7b9b92977365…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2f95bc6d324a93b2411bcc5defe4d4414c45f325 , < c17a4f52fa3c3dac2dd6a3c38f2de7342d97d74c (git) Affected: 2f95bc6d324a93b2411bcc5defe4d4414c45f325 , < 2bda89735199683b03f55b807bd1e31a3857520b (git) Affected: 2f95bc6d324a93b2411bcc5defe4d4414c45f325 , < e60b0d3b5aa2e8d934deca9e11215af84e632bc9 (git) Affected: 2f95bc6d324a93b2411bcc5defe4d4414c45f325 , < f37a1d9e5e22d5489309c3cd2db476dcdcc6530c (git) Affected: 2f95bc6d324a93b2411bcc5defe4d4414c45f325 , < b57b53e8ffcdfda87d954fc4187426a54fe75a3d (git) Affected: 2f95bc6d324a93b2411bcc5defe4d4414c45f325 , < 0d71916694aceb207fefecf62dfa811ec1108bbd (git) Affected: 2f95bc6d324a93b2411bcc5defe4d4414c45f325 , < 334de68eda2b99892ba869c15cb59bc956fd9f42 (git) Affected: 2f95bc6d324a93b2411bcc5defe4d4414c45f325 , < e794b7b9b92977365c693760a259f8eef940c536 (git)
Linux	Linux	Affected: 4.11 Unaffected: 0 , < 4.11 (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)

Show details on NVD website

JSON

To clipboard

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CVE-2024-49881 (GCVE-0-2024-49881)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:41

Title

ext4: update orig_path in ext4_find_extent()

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: update orig_path in ext4_find_extent() In ext4_find_extent(), if the path is not big enough, we free it and set *orig_path to NULL. But after reallocating and successfully initializing the path, we don't update *orig_path, in which case the caller gets a valid path but a NULL ppath, and this may cause a NULL pointer dereference or a path memory leak. For example: ext4_split_extent path = *ppath = 2000 ext4_find_extent if (depth > path[0].p_maxdepth) kfree(path = 2000); *orig_path = path = NULL; path = kcalloc() = 3000 ext4_split_extent_at(*ppath = NULL) path = *ppath; ex = path[depth].p_ext; // NULL pointer dereference! ================================================================== BUG: kernel NULL pointer dereference, address: 0000000000000010 CPU: 6 UID: 0 PID: 576 Comm: fsstress Not tainted 6.11.0-rc2-dirty #847 RIP: 0010:ext4_split_extent_at+0x6d/0x560 Call Trace: <TASK> ext4_split_extent.isra.0+0xcb/0x1b0 ext4_ext_convert_to_initialized+0x168/0x6c0 ext4_ext_handle_unwritten_extents+0x325/0x4d0 ext4_ext_map_blocks+0x520/0xdb0 ext4_map_blocks+0x2b0/0x690 ext4_iomap_begin+0x20e/0x2c0 [...] ================================================================== Therefore, *orig_path is updated when the extent lookup succeeds, so that the caller can safely use path or *ppath.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

10 references

URL	Tags
https://git.kernel.org/stable/c/ec0c0beb9b777cdd1…
https://git.kernel.org/stable/c/6766937d0327000ac…
https://git.kernel.org/stable/c/a9fcb1717d75061d3…
https://git.kernel.org/stable/c/6801ed1298204d16a…
https://git.kernel.org/stable/c/f55ecc58d07a6c1f6…
https://git.kernel.org/stable/c/b63481b3a388ee2df…
https://git.kernel.org/stable/c/11b230100d6801c01…
https://git.kernel.org/stable/c/5b4b2dcace35f618f…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 10809df84a4d868db61af621bae3658494165279 , < ec0c0beb9b777cdd1edd7df9b36e0f3e67e2bdff (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < 6766937d0327000ac1b87c97bbecdd28b0dd6599 (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < a9fcb1717d75061d3653ed69365c8d45331815cd (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < 6801ed1298204d16a38571091e31178bfdc3c679 (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < f55ecc58d07a6c1f6d6d5b5af125c25f8da0bda2 (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < b63481b3a388ee2df9e295f97273226140422a42 (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < 11b230100d6801c014fab2afabc8bdea304c1b96 (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < 5b4b2dcace35f618fe361a87bae6f0d13af31bc1 (git)
Linux	Linux	Affected: 3.18 Unaffected: 0 , < 3.18 (semver) Unaffected: 4.19.323 , ≤ 4.19.* (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)

Show details on NVD website

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CVE-2024-49882 (GCVE-0-2024-49882)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:41

Title

ext4: fix double brelse() the buffer of the extents path

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: fix double brelse() the buffer of the extents path In ext4_ext_try_to_merge_up(), set path[1].p_bh to NULL after it has been released, otherwise it may be released twice. An example of what triggers this is as follows: split2 map split1 |--------|-------|--------| ext4_ext_map_blocks ext4_ext_handle_unwritten_extents ext4_split_convert_extents // path->p_depth == 0 ext4_split_extent // 1. do split1 ext4_split_extent_at |ext4_ext_insert_extent | ext4_ext_create_new_leaf | ext4_ext_grow_indepth | le16_add_cpu(&neh->eh_depth, 1) | ext4_find_extent | // return -ENOMEM |// get error and try zeroout |path = ext4_find_extent | path->p_depth = 1 |ext4_ext_try_to_merge | ext4_ext_try_to_merge_up | path->p_depth = 0 | brelse(path[1].p_bh) ---> not set to NULL here |// zeroout success // 2. update path ext4_find_extent // 3. do split2 ext4_split_extent_at ext4_ext_insert_extent ext4_ext_create_new_leaf ext4_ext_grow_indepth le16_add_cpu(&neh->eh_depth, 1) ext4_find_extent path[0].p_bh = NULL; path->p_depth = 1 read_extent_tree_block ---> return err // path[1].p_bh is still the old value ext4_free_ext_path ext4_ext_drop_refs // path->p_depth == 1 brelse(path[1].p_bh) ---> brelse a buffer twice Finally got the following WARRNING when removing the buffer from lru: ============================================ VFS: brelse: Trying to free free buffer WARNING: CPU: 2 PID: 72 at fs/buffer.c:1241 __brelse+0x58/0x90 CPU: 2 PID: 72 Comm: kworker/u19:1 Not tainted 6.9.0-dirty #716 RIP: 0010:__brelse+0x58/0x90 Call Trace: <TASK> __find_get_block+0x6e7/0x810 bdev_getblk+0x2b/0x480 __ext4_get_inode_loc+0x48a/0x1240 ext4_get_inode_loc+0xb2/0x150 ext4_reserve_inode_write+0xb7/0x230 __ext4_mark_inode_dirty+0x144/0x6a0 ext4_ext_insert_extent+0x9c8/0x3230 ext4_ext_map_blocks+0xf45/0x2dc0 ext4_map_blocks+0x724/0x1700 ext4_do_writepages+0x12d6/0x2a70 [...] ============================================

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

11 references

URL	Tags
https://git.kernel.org/stable/c/d4574bda63906bf69…
https://git.kernel.org/stable/c/f9fd47c9d9548f9e4…
https://git.kernel.org/stable/c/b6c29c8f3d7cb67b5…
https://git.kernel.org/stable/c/32bbb59e3f18facd7…
https://git.kernel.org/stable/c/78bbc3d15b6f443ac…
https://git.kernel.org/stable/c/68a69cf60660c7399…
https://git.kernel.org/stable/c/7633407ca4ab8be29…
https://git.kernel.org/stable/c/230ee0535d01478ba…
https://git.kernel.org/stable/c/dcaa6c31134c0f515…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ecb94f5fdf4b72547fca022421a9dca1672bddd4 , < d4574bda63906bf69660e001470bfe1a0ac524ae (git) Affected: ecb94f5fdf4b72547fca022421a9dca1672bddd4 , < f9fd47c9d9548f9e47fa60098eab99dde175401d (git) Affected: ecb94f5fdf4b72547fca022421a9dca1672bddd4 , < b6c29c8f3d7cb67b505f3b2f6c242d52298d1f2e (git) Affected: ecb94f5fdf4b72547fca022421a9dca1672bddd4 , < 32bbb59e3f18facd7201bef110010bf35819b8c3 (git) Affected: ecb94f5fdf4b72547fca022421a9dca1672bddd4 , < 78bbc3d15b6f443acb26e94418c445bac940d414 (git) Affected: ecb94f5fdf4b72547fca022421a9dca1672bddd4 , < 68a69cf60660c73990c1875f94a5551600b04775 (git) Affected: ecb94f5fdf4b72547fca022421a9dca1672bddd4 , < 7633407ca4ab8be2916ab214eb44ccebc6a50e1a (git) Affected: ecb94f5fdf4b72547fca022421a9dca1672bddd4 , < 230ee0535d01478bad9a3037292043f39b9be10b (git) Affected: ecb94f5fdf4b72547fca022421a9dca1672bddd4 , < dcaa6c31134c0f515600111c38ed7750003e1b9c (git)
Linux	Linux	Affected: 3.7 Unaffected: 0 , < 3.7 (semver) Unaffected: 4.19.323 , ≤ 4.19.* (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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CVE-2024-49883 (GCVE-0-2024-49883)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:41

Title

ext4: aovid use-after-free in ext4_ext_insert_extent()

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: aovid use-after-free in ext4_ext_insert_extent() As Ojaswin mentioned in Link, in ext4_ext_insert_extent(), if the path is reallocated in ext4_ext_create_new_leaf(), we'll use the stale path and cause UAF. Below is a sample trace with dummy values: ext4_ext_insert_extent path = *ppath = 2000 ext4_ext_create_new_leaf(ppath) ext4_find_extent(ppath) path = *ppath = 2000 if (depth > path[0].p_maxdepth) kfree(path = 2000); *ppath = path = NULL; path = kcalloc() = 3000 *ppath = 3000; return path; /* here path is still 2000, UAF! */ eh = path[depth].p_hdr ================================================================== BUG: KASAN: slab-use-after-free in ext4_ext_insert_extent+0x26d4/0x3330 Read of size 8 at addr ffff8881027bf7d0 by task kworker/u36:1/179 CPU: 3 UID: 0 PID: 179 Comm: kworker/u6:1 Not tainted 6.11.0-rc2-dirty #866 Call Trace: <TASK> ext4_ext_insert_extent+0x26d4/0x3330 ext4_ext_map_blocks+0xe22/0x2d40 ext4_map_blocks+0x71e/0x1700 ext4_do_writepages+0x1290/0x2800 [...] Allocated by task 179: ext4_find_extent+0x81c/0x1f70 ext4_ext_map_blocks+0x146/0x2d40 ext4_map_blocks+0x71e/0x1700 ext4_do_writepages+0x1290/0x2800 ext4_writepages+0x26d/0x4e0 do_writepages+0x175/0x700 [...] Freed by task 179: kfree+0xcb/0x240 ext4_find_extent+0x7c0/0x1f70 ext4_ext_insert_extent+0xa26/0x3330 ext4_ext_map_blocks+0xe22/0x2d40 ext4_map_blocks+0x71e/0x1700 ext4_do_writepages+0x1290/0x2800 ext4_writepages+0x26d/0x4e0 do_writepages+0x175/0x700 [...] ================================================================== So use *ppath to update the path to avoid the above problem.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

Assigner

Linux

References

11 references

URL	Tags
https://git.kernel.org/stable/c/e17ebe4fdd7665c93…
https://git.kernel.org/stable/c/975ca06f3fd154c5f…
https://git.kernel.org/stable/c/5e811066c5ab709b0…
https://git.kernel.org/stable/c/9df59009dfc6d9fc1…
https://git.kernel.org/stable/c/51db04892a993cace…
https://git.kernel.org/stable/c/8162ee5d94b8c0351…
https://git.kernel.org/stable/c/beb7b66fb489041c5…
https://git.kernel.org/stable/c/bfed082ce4b1ce634…
https://git.kernel.org/stable/c/a164f3a432aae62ca…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 10809df84a4d868db61af621bae3658494165279 , < e17ebe4fdd7665c93ae9459ba40fcdfb76769ac1 (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < 975ca06f3fd154c5f7742083e7b2574c57d1c0c3 (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < 5e811066c5ab709b070659197dccfb80ab650ddd (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < 9df59009dfc6d9fc1bd9ddf6c5ab6e56d6ed887a (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < 51db04892a993cace63415be99848970a0f15ef2 (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < 8162ee5d94b8c0351be0a9321be134872a7654a1 (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < beb7b66fb489041c50c6473100b383f7a51648fc (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < bfed082ce4b1ce6349b05c09a0fa4f3da35ecb1b (git) Affected: 10809df84a4d868db61af621bae3658494165279 , < a164f3a432aae62ca23d03e6d926b122ee5b860d (git)
Linux	Linux	Affected: 3.18 Unaffected: 0 , < 3.18 (semver) Unaffected: 4.19.323 , ≤ 4.19.* (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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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49883",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:45:23.101470Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:48:50.259Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:22:49.557Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "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"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/extents.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e17ebe4fdd7665c93ae9459ba40fcdfb76769ac1",
              "status": "affected",
              "version": "10809df84a4d868db61af621bae3658494165279",
              "versionType": "git"
            },
            {
              "lessThan": "975ca06f3fd154c5f7742083e7b2574c57d1c0c3",
              "status": "affected",
              "version": "10809df84a4d868db61af621bae3658494165279",
              "versionType": "git"
            },
            {
              "lessThan": "5e811066c5ab709b070659197dccfb80ab650ddd",
              "status": "affected",
              "version": "10809df84a4d868db61af621bae3658494165279",
              "versionType": "git"
            },
            {
              "lessThan": "9df59009dfc6d9fc1bd9ddf6c5ab6e56d6ed887a",
              "status": "affected",
              "version": "10809df84a4d868db61af621bae3658494165279",
              "versionType": "git"
            },
            {
              "lessThan": "51db04892a993cace63415be99848970a0f15ef2",
              "status": "affected",
              "version": "10809df84a4d868db61af621bae3658494165279",
              "versionType": "git"
            },
            {
              "lessThan": "8162ee5d94b8c0351be0a9321be134872a7654a1",
              "status": "affected",
              "version": "10809df84a4d868db61af621bae3658494165279",
              "versionType": "git"
            },
            {
              "lessThan": "beb7b66fb489041c50c6473100b383f7a51648fc",
              "status": "affected",
              "version": "10809df84a4d868db61af621bae3658494165279",
              "versionType": "git"
            },
            {
              "lessThan": "bfed082ce4b1ce6349b05c09a0fa4f3da35ecb1b",
              "status": "affected",
              "version": "10809df84a4d868db61af621bae3658494165279",
              "versionType": "git"
            },
            {
              "lessThan": "a164f3a432aae62ca23d03e6d926b122ee5b860d",
              "status": "affected",
              "version": "10809df84a4d868db61af621bae3658494165279",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/extents.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.18"
            },
            {
              "lessThan": "3.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.323",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.285",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.227",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.323",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.285",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.227",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.168",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.113",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.55",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.14",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.3",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "3.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: aovid use-after-free in ext4_ext_insert_extent()\n\nAs Ojaswin mentioned in Link, in ext4_ext_insert_extent(), if the path is\nreallocated in ext4_ext_create_new_leaf(), we\u0027ll use the stale path and\ncause UAF. Below is a sample trace with dummy values:\n\next4_ext_insert_extent\n  path = *ppath = 2000\n  ext4_ext_create_new_leaf(ppath)\n    ext4_find_extent(ppath)\n      path = *ppath = 2000\n      if (depth \u003e path[0].p_maxdepth)\n            kfree(path = 2000);\n            *ppath = path = NULL;\n      path = kcalloc() = 3000\n      *ppath = 3000;\n      return path;\n  /* here path is still 2000, UAF! */\n  eh = path[depth].p_hdr\n\n==================================================================\nBUG: KASAN: slab-use-after-free in ext4_ext_insert_extent+0x26d4/0x3330\nRead of size 8 at addr ffff8881027bf7d0 by task kworker/u36:1/179\nCPU: 3 UID: 0 PID: 179 Comm: kworker/u6:1 Not tainted 6.11.0-rc2-dirty #866\nCall Trace:\n \u003cTASK\u003e\n ext4_ext_insert_extent+0x26d4/0x3330\n ext4_ext_map_blocks+0xe22/0x2d40\n ext4_map_blocks+0x71e/0x1700\n ext4_do_writepages+0x1290/0x2800\n[...]\n\nAllocated by task 179:\n ext4_find_extent+0x81c/0x1f70\n ext4_ext_map_blocks+0x146/0x2d40\n ext4_map_blocks+0x71e/0x1700\n ext4_do_writepages+0x1290/0x2800\n ext4_writepages+0x26d/0x4e0\n do_writepages+0x175/0x700\n[...]\n\nFreed by task 179:\n kfree+0xcb/0x240\n ext4_find_extent+0x7c0/0x1f70\n ext4_ext_insert_extent+0xa26/0x3330\n ext4_ext_map_blocks+0xe22/0x2d40\n ext4_map_blocks+0x71e/0x1700\n ext4_do_writepages+0x1290/0x2800\n ext4_writepages+0x26d/0x4e0\n do_writepages+0x175/0x700\n[...]\n==================================================================\n\nSo use *ppath to update the path to avoid the above problem."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:41:06.353Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e17ebe4fdd7665c93ae9459ba40fcdfb76769ac1"
        },
        {
          "url": "https://git.kernel.org/stable/c/975ca06f3fd154c5f7742083e7b2574c57d1c0c3"
        },
        {
          "url": "https://git.kernel.org/stable/c/5e811066c5ab709b070659197dccfb80ab650ddd"
        },
        {
          "url": "https://git.kernel.org/stable/c/9df59009dfc6d9fc1bd9ddf6c5ab6e56d6ed887a"
        },
        {
          "url": "https://git.kernel.org/stable/c/51db04892a993cace63415be99848970a0f15ef2"
        },
        {
          "url": "https://git.kernel.org/stable/c/8162ee5d94b8c0351be0a9321be134872a7654a1"
        },
        {
          "url": "https://git.kernel.org/stable/c/beb7b66fb489041c50c6473100b383f7a51648fc"
        },
        {
          "url": "https://git.kernel.org/stable/c/bfed082ce4b1ce6349b05c09a0fa4f3da35ecb1b"
        },
        {
          "url": "https://git.kernel.org/stable/c/a164f3a432aae62ca23d03e6d926b122ee5b860d"
        }
      ],
      "title": "ext4: aovid use-after-free in ext4_ext_insert_extent()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-49883",
    "datePublished": "2024-10-21T18:01:20.827Z",
    "dateReserved": "2024-10-21T12:17:06.021Z",
    "dateUpdated": "2026-05-11T20:41:06.353Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CERTFR-2024-AVI-1108

Solutions

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

CVE-2024-49868 (GCVE-0-2024-49868)

CVE-2024-49871 (GCVE-0-2024-49871)

CVE-2024-49875 (GCVE-0-2024-49875)

CVE-2024-49877 (GCVE-0-2024-49877)

CVE-2024-49878 (GCVE-0-2024-49878)

CVE-2024-49879 (GCVE-0-2024-49879)

CVE-2024-49881 (GCVE-0-2024-49881)

CVE-2024-49882 (GCVE-0-2024-49882)

CVE-2024-49883 (GCVE-0-2024-49883)

Tags

Sightings

Nomenclature