What is CVE-2025-38310?

CVE-2025-38310 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.14 onward and patched in 5.15.186, 6.1.142, 6.6.94 and others. CVE-2025-38310 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38310?

CVE-2025-38310 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-2025-38310?

Yes, CVE-2025-38310 has been patched. Fixed versions include 5.15.186, 6.1.142, 6.6.94 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38310 actively exploited?

CVE-2025-38310 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-38310

Medium

In the Linux kernel, the following vulnerability has been resolved: seg6: Fix validation of nexthop addresses The kernel currently validates that the length of the provided nexthop address does not exceed the specified length. This can lead to the kernel reading uninitialized memory if user space provided a shorter length than the specified one. Fix by validating that the provided length exactly matches the specified one.

Package Linux Kernel

Published 2025-07-10

Last modified 2025-12-19

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 4.14 and later are affected. Fixed in 5.15.186, 6.1.142, 6.6.94, 6.12.34, 6.15.3, 6.16 and their respective stable series.

Affected from

≥ 4.14

Fixed in

✓ 5.15.186 5.15.x ✓ 6.1.142 6.1.x ✓ 6.6.94 6.6.x ✓ 6.12.34 6.12.x ✓ 6.15.3 6.15.x ✓ 6.16

References

The following references provide additional information about CVE-2025-38310 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

Third Party Advisory
Kernel patch commit
https://git.kernel.org/stable/c/668923c474608dd9ebce0fbcc41bd8a27aa73dd6
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7632fedb266d93ed0ed9f487133e6c6314a9b2d1
Patch
Kernel patch commit
https://git.kernel.org/stable/c/cd4cd09810211fa23609c5c1018352e9e1cd8e5a
Patch

6 patch commits total View all on NVD

Details

CVE ID CVE-2025-38310

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-07-10

Modified 2025-12-19

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38310?

CVE-2025-38310 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.14 onward and has been patched in 5.15.186, 6.1.142, 6.6.94 and others. CVE-2025-38310 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38310?

CVE-2025-38310 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-2025-38310?

Yes — CVE-2025-38310 has been patched. Fixed versions include 5.15.186, 6.1.142, 6.6.94 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38310 actively exploited?

No — CVE-2025-38310 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.