NULL Pointer Dereference Affecting kernel-uek-debug-modules package, versions <0:6.12.0-102.36.5.2.el9uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (10th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELUEKDEBUGMODULES-10781979
  • published18 Jul 2025
  • disclosed27 Feb 2025

Introduced: 27 Feb 2025

CVE-2025-21775  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-uek-debug-modules to version 0:6.12.0-102.36.5.2.el9uek or higher.
This issue was patched in ELSA-2025-20530.

NVD Description

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

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

can: ctucanfd: handle skb allocation failure

If skb allocation fails, the pointer to struct can_frame is NULL. This is actually handled everywhere inside ctucan_err_interrupt() except for the only place.

Add the missed NULL check.

Found by Linux Verification Center (linuxtesting.org) with SVACE static analysis tool.

CVSS Base Scores

version 3.1