CVE-2025-21979 | BDVDB-2026-272803 Detail
LinuxLinux
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
- CWE-416 Use After Free
References#
- https://git.kernel.org/stable/c/8930a3e1568cf534f86c8ed2def817c6d0528fc1
- https://git.kernel.org/stable/c/0272d4af7f92997541d8bbf4c51918b93ded6ee2
- https://git.kernel.org/stable/c/75d262ad3c36d52852d764588fcd887f0fcd9138
- https://git.kernel.org/stable/c/a5158d67bff06cb6fea31be39aeb319fd908ed8e
- https://git.kernel.org/stable/c/dea22de162058216a90f2706f0d0b36f0ff309fd
- https://git.kernel.org/stable/c/72d520476a2fab6f3489e8388ab524985d6c4b90
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.