cve-2024-57896
Vulnerability from cvelistv5
Published
2025-01-15 13:05
Modified
2025-02-11 15:45
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
btrfs: flush delalloc workers queue before stopping cleaner kthread during unmount
During the unmount path, at close_ctree(), we first stop the cleaner
kthread, using kthread_stop() which frees the associated task_struct, and
then stop and destroy all the work queues. However after we stopped the
cleaner we may still have a worker from the delalloc_workers queue running
inode.c:submit_compressed_extents(), which calls btrfs_add_delayed_iput(),
which in turn tries to wake up the cleaner kthread - which was already
destroyed before, resulting in a use-after-free on the task_struct.
Syzbot reported this with the following stack traces:
BUG: KASAN: slab-use-after-free in __lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089
Read of size 8 at addr ffff8880259d2818 by task kworker/u8:3/52
CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.13.0-rc1-syzkaller-00002-gcdd30ebb1b9f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: btrfs-delalloc 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:378 [inline]
print_report+0x169/0x550 mm/kasan/report.c:489
kasan_report+0x143/0x180 mm/kasan/report.c:602
__lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
__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+0xc2/0x1470 kernel/sched/core.c:4205
submit_compressed_extents+0xdf/0x16e0 fs/btrfs/inode.c:1615
run_ordered_work fs/btrfs/async-thread.c:288 [inline]
btrfs_work_helper+0x96f/0xc40 fs/btrfs/async-thread.c:324
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 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:250 [inline]
slab_post_alloc_hook mm/slub.c:4104 [inline]
slab_alloc_node mm/slub.c:4153 [inline]
kmem_cache_alloc_node_noprof+0x1d9/0x380 mm/slub.c:4205
alloc_task_struct_node kernel/fork.c:180 [inline]
dup_task_struct+0x57/0x8c0 kernel/fork.c:1113
copy_process+0x5d1/0x3d50 kernel/fork.c:2225
kernel_clone+0x223/0x870 kernel/fork.c:2807
kernel_thread+0x1bc/0x240 kernel/fork.c:2869
create_kthread kernel/kthread.c:412 [inline]
kthreadd+0x60d/0x810 kernel/kthread.c:767
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 24:
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:582
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:233 [inline]
slab_free_hook mm/slub.c:2338 [inline]
slab_free mm/slub.c:4598 [inline]
kmem_cache_free+0x195/0x410 mm/slub.c:4700
put_task_struct include/linux/sched/task.h:144 [inline]
delayed_put_task_struct+0x125/0x300 kernel/exit.c:227
rcu_do_batch kernel/rcu/tree.c:2567 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554
run_ksoftirqd+0xca/0x130 kernel/softirq.c:943
---truncated---
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||||||
|
|||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2024-57896",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-11T15:40:57.951586Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use After Free",
"lang": "en",
"type": "CWE"
}
]
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"providerMetadata": {
"dateUpdated": "2025-02-11T15:45:19.574Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
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"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/btrfs/disk-io.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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"lessThan": "a2718ed1eb8c3611b63f8933c7e68c8821fe2808",
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"versionType": "git"
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{
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{
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"status": "affected",
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{
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"status": "affected",
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"versionType": "git"
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{
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{
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"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.233",
"versionType": "semver"
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{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.176",
"versionType": "semver"
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{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.124",
"versionType": "semver"
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{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.70",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.13",
"versionType": "original_commit_for_fix"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: flush delalloc workers queue before stopping cleaner kthread during unmount\n\nDuring the unmount path, at close_ctree(), we first stop the cleaner\nkthread, using kthread_stop() which frees the associated task_struct, and\nthen stop and destroy all the work queues. However after we stopped the\ncleaner we may still have a worker from the delalloc_workers queue running\ninode.c:submit_compressed_extents(), which calls btrfs_add_delayed_iput(),\nwhich in turn tries to wake up the cleaner kthread - which was already\ndestroyed before, resulting in a use-after-free on the task_struct.\n\nSyzbot reported this with the following stack traces:\n\n BUG: KASAN: slab-use-after-free in __lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089\n Read of size 8 at addr ffff8880259d2818 by task kworker/u8:3/52\n\n CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.13.0-rc1-syzkaller-00002-gcdd30ebb1b9f #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\n Workqueue: btrfs-delalloc 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:378 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:489\n kasan_report+0x143/0x180 mm/kasan/report.c:602\n __lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089\n lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849\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+0xc2/0x1470 kernel/sched/core.c:4205\n submit_compressed_extents+0xdf/0x16e0 fs/btrfs/inode.c:1615\n run_ordered_work fs/btrfs/async-thread.c:288 [inline]\n btrfs_work_helper+0x96f/0xc40 fs/btrfs/async-thread.c:324\n process_one_work kernel/workqueue.c:3229 [inline]\n process_scheduled_works+0xa66/0x1840 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:250 [inline]\n slab_post_alloc_hook mm/slub.c:4104 [inline]\n slab_alloc_node mm/slub.c:4153 [inline]\n kmem_cache_alloc_node_noprof+0x1d9/0x380 mm/slub.c:4205\n alloc_task_struct_node kernel/fork.c:180 [inline]\n dup_task_struct+0x57/0x8c0 kernel/fork.c:1113\n copy_process+0x5d1/0x3d50 kernel/fork.c:2225\n kernel_clone+0x223/0x870 kernel/fork.c:2807\n kernel_thread+0x1bc/0x240 kernel/fork.c:2869\n create_kthread kernel/kthread.c:412 [inline]\n kthreadd+0x60d/0x810 kernel/kthread.c:767\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 24:\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:582\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:233 [inline]\n slab_free_hook mm/slub.c:2338 [inline]\n slab_free mm/slub.c:4598 [inline]\n kmem_cache_free+0x195/0x410 mm/slub.c:4700\n put_task_struct include/linux/sched/task.h:144 [inline]\n delayed_put_task_struct+0x125/0x300 kernel/exit.c:227\n rcu_do_batch kernel/rcu/tree.c:2567 [inline]\n rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823\n handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554\n run_ksoftirqd+0xca/0x130 kernel/softirq.c:943\n \n---truncated---"
}
],
"providerMetadata": {
"dateUpdated": "2025-01-20T06:29:06.443Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a2718ed1eb8c3611b63f8933c7e68c8821fe2808"
},
{
"url": "https://git.kernel.org/stable/c/63f4b594a688bf922e8691f0784679aa7af7988c"
},
{
"url": "https://git.kernel.org/stable/c/1ea629e7bb2fb40555e5e01a1b5095df31287017"
},
{
"url": "https://git.kernel.org/stable/c/35916b2f96505a18dc7242a115611b718d9de725"
},
{
"url": "https://git.kernel.org/stable/c/d77a3a99b53d12c061c007cdc96df38825dee476"
},
{
"url": "https://git.kernel.org/stable/c/f10bef73fb355e3fc85e63a50386798be68ff486"
}
],
"title": "btrfs: flush delalloc workers queue before stopping cleaner kthread during unmount",
"x_generator": {
"engine": "bippy-5f407fcff5a0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-57896",
"datePublished": "2025-01-15T13:05:48.310Z",
"dateReserved": "2025-01-11T14:45:42.029Z",
"dateUpdated": "2025-02-11T15:45:19.574Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2024-57896\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-01-15T13:15:14.200\",\"lastModified\":\"2025-02-11T16:15:49.050\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: flush delalloc workers queue before stopping cleaner kthread during unmount\\n\\nDuring the unmount path, at close_ctree(), we first stop the cleaner\\nkthread, using kthread_stop() which frees the associated task_struct, and\\nthen stop and destroy all the work queues. However after we stopped the\\ncleaner we may still have a worker from the delalloc_workers queue running\\ninode.c:submit_compressed_extents(), which calls btrfs_add_delayed_iput(),\\nwhich in turn tries to wake up the cleaner kthread - which was already\\ndestroyed before, resulting in a use-after-free on the task_struct.\\n\\nSyzbot reported this with the following stack traces:\\n\\n BUG: KASAN: slab-use-after-free in __lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089\\n Read of size 8 at addr ffff8880259d2818 by task kworker/u8:3/52\\n\\n CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.13.0-rc1-syzkaller-00002-gcdd30ebb1b9f #0\\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\\n Workqueue: btrfs-delalloc 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:378 [inline]\\n print_report+0x169/0x550 mm/kasan/report.c:489\\n kasan_report+0x143/0x180 mm/kasan/report.c:602\\n __lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089\\n lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849\\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+0xc2/0x1470 kernel/sched/core.c:4205\\n submit_compressed_extents+0xdf/0x16e0 fs/btrfs/inode.c:1615\\n run_ordered_work fs/btrfs/async-thread.c:288 [inline]\\n btrfs_work_helper+0x96f/0xc40 fs/btrfs/async-thread.c:324\\n process_one_work kernel/workqueue.c:3229 [inline]\\n process_scheduled_works+0xa66/0x1840 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:250 [inline]\\n slab_post_alloc_hook mm/slub.c:4104 [inline]\\n slab_alloc_node mm/slub.c:4153 [inline]\\n kmem_cache_alloc_node_noprof+0x1d9/0x380 mm/slub.c:4205\\n alloc_task_struct_node kernel/fork.c:180 [inline]\\n dup_task_struct+0x57/0x8c0 kernel/fork.c:1113\\n copy_process+0x5d1/0x3d50 kernel/fork.c:2225\\n kernel_clone+0x223/0x870 kernel/fork.c:2807\\n kernel_thread+0x1bc/0x240 kernel/fork.c:2869\\n create_kthread kernel/kthread.c:412 [inline]\\n kthreadd+0x60d/0x810 kernel/kthread.c:767\\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 24:\\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:582\\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:233 [inline]\\n slab_free_hook mm/slub.c:2338 [inline]\\n slab_free mm/slub.c:4598 [inline]\\n kmem_cache_free+0x195/0x410 mm/slub.c:4700\\n put_task_struct include/linux/sched/task.h:144 [inline]\\n delayed_put_task_struct+0x125/0x300 kernel/exit.c:227\\n rcu_do_batch kernel/rcu/tree.c:2567 [inline]\\n rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823\\n handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554\\n run_ksoftirqd+0xca/0x130 kernel/softirq.c:943\\n \\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: vaciar la cola de trabajadores delalloc antes de detener el kthread del limpiador durante el desmontaje Durante la ruta de desmontaje, en close_ctree(), primero detenemos el kthread del limpiador, utilizando kthread_stop() que libera el task_struct asociado, y luego detenemos y destruimos todas las colas de trabajo. Sin embargo, despu\u00e9s de detener el limpiador, es posible que a\u00fan tengamos un trabajador de la cola delalloc_workers ejecutando inode.c:submit_compressed_extents(), que llama a btrfs_add_delayed_iput(), que a su vez intenta despertar el kthread del limpiador, que ya se destruy\u00f3 antes, lo que resulta en un uso despu\u00e9s de la liberaci\u00f3n en el task_struct. Syzbot inform\u00f3 esto con los siguientes seguimientos de pila: ERROR: KASAN: slab-use-after-free en __lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff8880259d2818 por la tarea kworker/u8:3/52 CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 No contaminado 6.13.0-rc1-syzkaller-00002-gcdd30ebb1b9f #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 13/09/2024 Cola de trabajo: btrfs-delalloc btrfs_work_helper Seguimiento de llamadas: __dump_stack lib/dump_stack.c:94 [en l\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [en l\u00ednea] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 __lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 __raw_spin_lock_irqsave incluir/linux/spinlock_api_smp.h:110 [en l\u00ednea] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [en l\u00ednea] try_to_wake_up+0xc2/0x1470 kernel/sched/core.c:4205 submit_compressed_extents+0xdf/0x16e0 fs/btrfs/inode.c:1615 run_ordered_work fs/btrfs/async-thread.c:288 [en l\u00ednea] btrfs_work_helper+0x96f/0xc40 fs/btrfs/async-thread.c:324 process_one_work kernel/workqueue.c:3229 [en l\u00ednea] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 Asignado por la tarea 2: kasan_save_stack mm/kasan/common.c:47 [en l\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [en l\u00ednea] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [en l\u00ednea] gancho de alloc de publicaci\u00f3n de losa mm/slub.c:4104 [en l\u00ednea] nodo de alloc de losa mm/slub.c:4153 [en l\u00ednea] nodo de alloc de cach\u00e9 kmem_noprof+0x1d9/0x380 mm/slub.c:4205 nodo de estructura de tareas de asignaci\u00f3n kernel/fork.c:180 [en l\u00ednea] estructura de tareas dup+0x57/0x8c0 kernel/fork.c:1113 proceso de copia+0x5d1/0x3d50 kernel/fork.c:2225 clon de kernel+0x223/0x870 kernel/fork.c:2807 kernel_thread+0x1bc/0x240 kernel/fork.c:2869 create_kthread kernel/kthread.c:412 [en l\u00ednea] kthreadd+0x60d/0x810 kernel/kthread.c:767 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Liberado por la tarea 24: kasan_save_stack mm/kasan/common.c:47 [en l\u00ednea] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582 poison_slab_object mm/kasan/common.c:247 [en l\u00ednea] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [en l\u00ednea] gancho slab_free mm/slub.c:2338 [en l\u00ednea] slab_free mm/slub.c:4598 [en l\u00ednea] kmem_cache_free+0x195/0x410 mm/slub.c:4700 put_task_struct include/linux/sched/task.h:144 [en l\u00ednea] delayed_put_task_struct+0x125/0x300 kernel/exit.c:227 rcu_do_batch kernel/rcu/tree.c:2567 [en l\u00ednea] rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554 run_ksoftirqd+0xca/0x130 kernel/softirq.c:943 ---truncado---\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.10.233\",\"matchCriteriaId\":\"B108BF34-DC4E-4111-9959-D325A6BD3B57\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.176\",\"matchCriteriaId\":\"DDBD8FC6-2357-4347-BFA1-B4A4A3039F35\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.124\",\"matchCriteriaId\":\"1B69CE1B-5219-42EB-B7DD-7E7D7F1DB032\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.70\",\"matchCriteriaId\":\"51E6CFF2-92AA-4936-95AB-2D068168A696\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.9\",\"matchCriteriaId\":\"1D13AF97-FFED-4B68-906D-CFE38D0B88DD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1ea629e7bb2fb40555e5e01a1b5095df31287017\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/35916b2f96505a18dc7242a115611b718d9de725\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/63f4b594a688bf922e8691f0784679aa7af7988c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a2718ed1eb8c3611b63f8933c7e68c8821fe2808\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d77a3a99b53d12c061c007cdc96df38825dee476\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f10bef73fb355e3fc85e63a50386798be68ff486\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-57896\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-11T15:40:57.951586Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-11T15:40:59.294Z\"}}], \"cna\": {\"title\": \"btrfs: flush delalloc workers queue before stopping cleaner kthread during unmount\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"a2718ed1eb8c3611b63f8933c7e68c8821fe2808\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"63f4b594a688bf922e8691f0784679aa7af7988c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"1ea629e7bb2fb40555e5e01a1b5095df31287017\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"35916b2f96505a18dc7242a115611b718d9de725\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"d77a3a99b53d12c061c007cdc96df38825dee476\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\", \"lessThan\": \"f10bef73fb355e3fc85e63a50386798be68ff486\", \"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\": \"unaffected\", \"version\": \"5.10.233\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.176\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.124\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.70\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.9\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/btrfs/disk-io.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a2718ed1eb8c3611b63f8933c7e68c8821fe2808\"}, {\"url\": \"https://git.kernel.org/stable/c/63f4b594a688bf922e8691f0784679aa7af7988c\"}, {\"url\": \"https://git.kernel.org/stable/c/1ea629e7bb2fb40555e5e01a1b5095df31287017\"}, {\"url\": \"https://git.kernel.org/stable/c/35916b2f96505a18dc7242a115611b718d9de725\"}, {\"url\": \"https://git.kernel.org/stable/c/d77a3a99b53d12c061c007cdc96df38825dee476\"}, {\"url\": \"https://git.kernel.org/stable/c/f10bef73fb355e3fc85e63a50386798be68ff486\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: flush delalloc workers queue before stopping cleaner kthread during unmount\\n\\nDuring the unmount path, at close_ctree(), we first stop the cleaner\\nkthread, using kthread_stop() which frees the associated task_struct, and\\nthen stop and destroy all the work queues. However after we stopped the\\ncleaner we may still have a worker from the delalloc_workers queue running\\ninode.c:submit_compressed_extents(), which calls btrfs_add_delayed_iput(),\\nwhich in turn tries to wake up the cleaner kthread - which was already\\ndestroyed before, resulting in a use-after-free on the task_struct.\\n\\nSyzbot reported this with the following stack traces:\\n\\n BUG: KASAN: slab-use-after-free in __lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089\\n Read of size 8 at addr ffff8880259d2818 by task kworker/u8:3/52\\n\\n CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.13.0-rc1-syzkaller-00002-gcdd30ebb1b9f #0\\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\\n Workqueue: btrfs-delalloc 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:378 [inline]\\n print_report+0x169/0x550 mm/kasan/report.c:489\\n kasan_report+0x143/0x180 mm/kasan/report.c:602\\n __lock_acquire+0x78/0x2100 kernel/locking/lockdep.c:5089\\n lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849\\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+0xc2/0x1470 kernel/sched/core.c:4205\\n submit_compressed_extents+0xdf/0x16e0 fs/btrfs/inode.c:1615\\n run_ordered_work fs/btrfs/async-thread.c:288 [inline]\\n btrfs_work_helper+0x96f/0xc40 fs/btrfs/async-thread.c:324\\n process_one_work kernel/workqueue.c:3229 [inline]\\n process_scheduled_works+0xa66/0x1840 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:250 [inline]\\n slab_post_alloc_hook mm/slub.c:4104 [inline]\\n slab_alloc_node mm/slub.c:4153 [inline]\\n kmem_cache_alloc_node_noprof+0x1d9/0x380 mm/slub.c:4205\\n alloc_task_struct_node kernel/fork.c:180 [inline]\\n dup_task_struct+0x57/0x8c0 kernel/fork.c:1113\\n copy_process+0x5d1/0x3d50 kernel/fork.c:2225\\n kernel_clone+0x223/0x870 kernel/fork.c:2807\\n kernel_thread+0x1bc/0x240 kernel/fork.c:2869\\n create_kthread kernel/kthread.c:412 [inline]\\n kthreadd+0x60d/0x810 kernel/kthread.c:767\\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 24:\\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:582\\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:233 [inline]\\n slab_free_hook mm/slub.c:2338 [inline]\\n slab_free mm/slub.c:4598 [inline]\\n kmem_cache_free+0x195/0x410 mm/slub.c:4700\\n put_task_struct include/linux/sched/task.h:144 [inline]\\n delayed_put_task_struct+0x125/0x300 kernel/exit.c:227\\n rcu_do_batch kernel/rcu/tree.c:2567 [inline]\\n rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823\\n handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554\\n run_ksoftirqd+0xca/0x130 kernel/softirq.c:943\\n \\n---truncated---\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-01-20T06:29:06.443Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-57896\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-02-11T15:45:19.574Z\", \"dateReserved\": \"2025-01-11T14:45:42.029Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-01-15T13:05:48.310Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.