What is CVE-2023-52940?

CVE-2023-52940 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.1 onward and patched in 6.1.11 and 6.2. CVE-2023-52940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52940?

CVE-2023-52940 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-2023-52940?

Yes, CVE-2023-52940 has been patched. Fixed versions include 6.1.11 and 6.2. If you are running Linux kernel 6.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52940 actively exploited?

CVE-2023-52940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-52940

Medium

In the Linux kernel, the following vulnerability has been resolved: mm: multi-gen LRU: fix crash during cgroup migration lru_gen_migrate_mm() assumes lru_gen_add_mm() runs prior to itself. This isn't true for the following scenario: CPU 1 CPU 2 clone() cgroup_can_fork() cgroup_procs_write() cgroup_post_fork() task_lock() lru_gen_migrate_mm() task_unlock() task_lock() lru_gen_add_mm() task_unlock() And when the above happens, kernel crashes because of linked list corruption (mm_struct->lru_gen.list).

Package Linux Kernel

Published 2025-03-27

Last modified 2025-10-28

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

Affected versions

Linux kernel versions 6.1 and later are affected. Fixed in 6.1.11, 6.2 and their respective stable series.

Affected from

≥ 6.1

Fixed in

✓ 6.1.11 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2023-52940 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/04448022311cebd30969d3aebdde765f1258b360
Patch
Kernel patch commit
https://git.kernel.org/stable/c/de08eaa6156405f2e9369f06ba5afae0e4ab3b62
Patch

Details

CVE ID CVE-2023-52940

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-03-27

Modified 2025-10-28

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52940?

CVE-2023-52940 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.1 onward and has been patched in 6.1.11 and 6.2. CVE-2023-52940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52940?

CVE-2023-52940 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-2023-52940?

Yes — CVE-2023-52940 has been patched. Fixed versions include 6.1.11 and 6.2. If you are running Linux kernel 6.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52940 actively exploited?

No — CVE-2023-52940 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.