CVE-2025-21765 Affecting kernel-default-base package, versions <5.14.21-150400.24.194.1.150400.24.98.3


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.09% (26th percentile)

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  • Snyk IDSNYK-SLES154-KERNELDEFAULTBASE-15350549
  • published25 Feb 2026
  • disclosed24 Feb 2026

Introduced: 24 Feb 2026

CVE-2025-21765  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 kernel-default-base to version 5.14.21-150400.24.194.1.150400.24.98.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-base package and not the kernel-default-base package as distributed by SLES. See How to fix? for SLES:15.4 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