CVE-2025-21764 Affecting kernel-modules-extra package, versions <0:6.12.0-55.19.1.0.1.el10_0


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (9th percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELMODULESEXTRA-10626638
  • published4 Jul 2025
  • disclosed27 Feb 2025

Introduced: 27 Feb 2025

CVE-2025-21764  (opens in a new tab)

How to fix?

Upgrade Oracle:10 kernel-modules-extra to version 0:6.12.0-55.19.1.0.1.el10_0 or higher.
This issue was patched in ELSA-2025-9079.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules-extra package and not the kernel-modules-extra package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

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

ndisc: use RCU protection in ndisc_alloc_skb()

ndisc_alloc_skb() can be called without RTNL or RCU being held.

Add RCU protection to avoid possible UAF.

CVSS Base Scores

version 3.1