What is CVE-2025-38660?

CVE-2025-38660 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.6 onward and patched in 6.12.42, 6.15.10, 6.16.1 and others. CVE-2025-38660 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38660?

CVE-2025-38660 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-2025-38660?

Yes, CVE-2025-38660 has been patched. Fixed versions include 6.12.42, 6.15.10, 6.16.1 and others. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38660 actively exploited?

CVE-2025-38660 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-38660

Medium

In the Linux kernel, the following vulnerability has been resolved: [ceph] parse_longname(): strrchr() expects NUL-terminated string ... and parse_longname() is not guaranteed that. That's the reason why it uses kmemdup_nul() to build the argument for kstrtou64(); the problem is, kstrtou64() is not the only thing that need it. Just get a NUL-terminated copy of the entire thing and be done with that...

Package Linux Kernel

Published 2025-08-22

Last modified 2025-11-25

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 6.6 and later are affected. Fixed in 6.12.42, 6.15.10, 6.16.1, 6.17 and their respective stable series.

Affected from

≥ 6.6

Fixed in

✓ 6.12.42 6.12.x ✓ 6.15.10 6.15.x ✓ 6.16.1 6.16.x ✓ 6.17

References

The following references provide additional information about CVE-2025-38660 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/101841c38346f4ca41dc1802c867da990ffb32eb
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3145b2b11492d61c512bbc59660bb823bc757f48
Patch
Kernel patch commit
https://git.kernel.org/stable/c/493479af8af3ab907f49e99323777d498a4fbd2b
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2025-38660

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-08-22

Modified 2025-11-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38660?

CVE-2025-38660 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.6 onward and has been patched in 6.12.42, 6.15.10, 6.16.1 and others. CVE-2025-38660 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38660?

CVE-2025-38660 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-2025-38660?

Yes — CVE-2025-38660 has been patched. Fixed versions include 6.12.42, 6.15.10, 6.16.1 and others. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38660 actively exploited?

No — CVE-2025-38660 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.