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Use After Free The advisory has been revoked - it doesn't affect any version of package kernel-debug-modules-internal  (opens in a new tab)

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EPSS
0.19% (10th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELDEBUGMODULESINTERNAL-9608029
  • published2 Apr 2025
  • disclosed1 Apr 2025
Report a new vulnerability Found a mistake?

Introduced: 1 Apr 2025

CVE-2025-21979  (opens in a new tab)
CWE-416  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules-internal package and not the kernel-debug-modules-internal package as distributed by RHEL.

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

wifi: cfg80211: cancel wiphy_work before freeing wiphy

A wiphy_work can be queued from the moment the wiphy is allocated and initialized (i.e. wiphy_new_nm). When a wiphy_work is queued, the rdev::wiphy_work is getting queued.

If wiphy_free is called before the rdev::wiphy_work had a chance to run, the wiphy memory will be freed, and then when it eventally gets to run it'll use invalid memory.

Fix this by canceling the work before freeing the wiphy.