CVE-2025-21765 Affecting kernel-doc package, versions <0:5.14.0-611.5.1.el9_7


Severity

Recommended
0.0
medium
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.06% (18th percentile)

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  • Snyk IDSNYK-ALMALINUX9-KERNELDOC-14065898
  • published20 Nov 2025
  • disclosed11 Nov 2025

Introduced: 11 Nov 2025

NewCVE-2025-21765  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 kernel-doc to version 0:5.14.0-611.5.1.el9_7 or higher.
This issue was patched in ALSA-2025:20518.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-doc package and not the kernel-doc package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

ipv6: use RCU protection in ip6_default_advmss()

ip6_default_advmss() needs rcu protection to make sure the net structure it reads does not disappear.

CVSS Base Scores

version 3.1