What is CVE-2025-21841?

CVE-2025-21841 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.12 onward and patched in 6.12.16, 6.13.4 and 6.14. CVE-2025-21841 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-21841?

CVE-2025-21841 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-2025-21841?

Yes, CVE-2025-21841 has been patched. Fixed versions include 6.12.16, 6.13.4 and 6.14. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-21841 actively exploited?

CVE-2025-21841 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-21841

Medium

In the Linux kernel, the following vulnerability has been resolved: cpufreq/amd-pstate: Fix cpufreq_policy ref counting amd_pstate_update_limits() takes a cpufreq_policy reference but doesn't decrement the refcount in one of the exit paths, fix that.

Package Linux Kernel

Published 2025-03-07

Last modified 2025-10-29

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 6.12 and later are affected. Fixed in 6.12.16, 6.13.4, 6.14 and their respective stable series.

Affected from

≥ 6.12

Fixed in

✓ 6.12.16 6.12.x ✓ 6.13.4 6.13.x ✓ 6.14

References

The following references provide additional information about CVE-2025-21841 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/28e4c515cf644c621800bd97841757fd49891ba4
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3ace20038e19f23fe73259513f1f08d4bf1a3c83
Patch
Kernel patch commit
https://git.kernel.org/stable/c/56e6976793c0fcf1638aa534242408ab4e4ca705
Patch

Details

CVE ID CVE-2025-21841

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-03-07

Modified 2025-10-29

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-21841?

CVE-2025-21841 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.16, 6.13.4 and 6.14. CVE-2025-21841 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-21841?

CVE-2025-21841 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-2025-21841?

Yes — CVE-2025-21841 has been patched. Fixed versions include 6.12.16, 6.13.4 and 6.14. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-21841 actively exploited?

No — CVE-2025-21841 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.