What is CVE-2024-40922?

CVE-2024-40922 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Improper Locking flaw (CWE-667), affecting Linux kernel versions from 6.4 onward and patched in 6.6.35, 6.9.6 and 6.10. CVE-2024-40922 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-40922?

CVE-2024-40922 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2024-40922?

Yes, CVE-2024-40922 has been patched. Fixed versions include 6.6.35, 6.9.6 and 6.10. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-40922 actively exploited?

CVE-2024-40922 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Improper Locking (CWE-667)?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/667.html

CVE-2024-40922

Medium

In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: don't lock while !TASK_RUNNING There is a report of io_rsrc_ref_quiesce() locking a mutex while not TASK_RUNNING, which is due to forgetting restoring the state back after io_run_task_work_sig() and attempts to break out of the waiting loop. do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff815d2494>] prepare_to_wait+0xa4/0x380 kernel/sched/wait.c:237 WARNING: CPU: 2 PID: 397056 at kernel/sched/core.c:10099 __might_sleep+0x114/0x160 kernel/sched/core.c:10099 RIP: 0010:__might_sleep+0x114/0x160 kernel/sched/core.c:10099 Call Trace: <TASK> __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0xb4/0x940 kernel/locking/mutex.c:752 io_rsrc_ref_quiesce+0x590/0x940 io_uring/rsrc.c:253 io_sqe_buffers_unregister+0xa2/0x340 io_uring/rsrc.c:799 __io_uring_register io_uring/register.c:424 [inline] __do_sys_io_uring_register+0x5b9/0x2400 io_uring/register.c:613 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd8/0x270 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77

Package Linux Kernel

Published 2024-07-12

Last modified 2025-10-03

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-667

CVE-2024-40922 is a Improper Locking vulnerability

What is Improper Locking?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.4 and later are affected. Fixed in 6.6.35, 6.9.6, 6.10 and their respective stable series.

Affected from

≥ 6.4

Fixed in

✓ 6.6.35 6.6.x ✓ 6.9.6 6.9.x ✓ 6.10

References

3 total

Kernel Git
https://git.kernel.org/stable/c/0c9df3df0c888d9ec8d11a68474a4aa04d371cff

Patch
Kernel Git
https://git.kernel.org/stable/c/4429c6c77e176a4c5aa7a3bbd1632f9fc0582518

Patch
Kernel Git
https://git.kernel.org/stable/c/54559642b96116b45e4b5ca7fd9f7835b8561272

Patch

Details

CVE ID CVE-2024-40922

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-07-12

Modified 2025-10-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-40922?

CVE-2024-40922 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Locking flaw (CWE-667) . It affects Linux kernel versions from 6.4 onward and has been patched in 6.6.35, 6.9.6 and 6.10. CVE-2024-40922 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-40922?

CVE-2024-40922 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2024-40922?

Yes. CVE-2024-40922 has been patched. Fixed versions include 6.6.35, 6.9.6 and 6.10. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-40922 actively exploited?

No. CVE-2024-40922 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.