What is CVE-2026-31416?

CVE-2026-31416 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.10.61 onward and patched in 5.10.253, 5.15.203, 6.1.168 and others. CVE-2026-31416 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-31416?

CVE-2026-31416 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-2026-31416?

Yes, CVE-2026-31416 has been patched. Fixed versions include 5.10.253, 5.15.203, 6.1.168 and others. If you are running Linux kernel 3.10.61 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-31416 actively exploited?

CVE-2026-31416 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-31416

Medium

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: account for netlink header size This is a followup to an old bug fix: NLMSG_DONE needs to account for the netlink header size, not just the attribute size. This can result in a WARN splat + drop of the netlink message, but other than this there are no ill effects.

Package Linux Kernel

Published 2026-04-13

Last modified 2026-05-20

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 3.10.61, 3.12.34, 3.14.25, 3.17.4, 3.18 and later are affected. Fixed in 5.10.253, 5.15.203, 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, 7.0 and their respective stable series.

Affected from

≥ 3.10.61 ≥ 3.12.34 ≥ 3.14.25 ≥ 3.17.4 ≥ 3.18

Fixed in

✓ 5.10.253 5.10.x ✓ 5.15.203 5.15.x ✓ 6.1.168 6.1.x ✓ 6.6.134 6.6.x ✓ 6.12.81 6.12.x ✓ 6.18.22 6.18.x ✓ 6.19.12 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-31416 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/09883bf257f4243ed5a1fd35078ec6f0d0f3696a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4ec216410fac9de83c99177a160ebb8d42fad075
Patch
Kernel patch commit
https://git.kernel.org/stable/c/607245c4dbb86d9a10dd8388da0fb82170a99b61
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2026-31416

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-04-13

Modified 2026-05-20

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-31416?

CVE-2026-31416 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.10.61 onward and has been patched in 5.10.253, 5.15.203, 6.1.168 and others. CVE-2026-31416 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-31416?

CVE-2026-31416 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-2026-31416?

Yes — CVE-2026-31416 has been patched. Fixed versions include 5.10.253, 5.15.203, 6.1.168 and others. If you are running Linux kernel 3.10.61 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-31416 actively exploited?

No — CVE-2026-31416 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.