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Vulnerabilities CVE-2025-21979

CVE-2025-21979

High
Open
TLP:CLEAR

wifi: cfg80211: cancel wiphy_work before freeing wiphy

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Description

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.

Details

CVSS Score
7.8
EPSS Score
0.19%

9.2th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Apr 1, 2025
Last Modified
Aug 5, 2026
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