What is CVE-2023-52942?

CVE-2023-52942 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-2023-52942 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52942?

CVE-2023-52942 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-2023-52942?

Yes, CVE-2023-52942 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-2023-52942 actively exploited?

CVE-2023-52942 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-52942

Medium

In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: Fix wrong check in update_parent_subparts_cpumask() It was found that the check to see if a partition could use up all the cpus from the parent cpuset in update_parent_subparts_cpumask() was incorrect. As a result, it is possible to leave parent with no effective cpu left even if there are tasks in the parent cpuset. This can lead to system panic as reported in [1]. Fix this probem by updating the check to fail the enabling the partition if parent's effective_cpus is a subset of the child's cpus_allowed. Also record the error code when an error happens in update_prstate() and add a test case where parent partition and child have the same cpu list and parent has task. Enabling partition in the child will fail in this case. [1] https://www.spinics.net/lists/cgroups/msg36254.html

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-2023-52942 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/a2ab7f2cf5ef8f0c6212a246e681d1fe358cec1f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e5ae8803847b80fe9d744a3174abe2b7bfed222a
Patch

Details

CVE ID CVE-2023-52942

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-2023-52942?

CVE-2023-52942 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-2023-52942 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52942?

CVE-2023-52942 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-2023-52942?

Yes — CVE-2023-52942 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-2023-52942 actively exploited?

No — CVE-2023-52942 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.