CVE-2025-21979
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).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.20% probability · 10th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0272d4af7f92997541d8bbf4c51918b93ded6ee2Patch
- https://git.kernel.org/stable/c/72d520476a2fab6f3489e8388ab524985d6c4b90Patch
- https://git.kernel.org/stable/c/75d262ad3c36d52852d764588fcd887f0fcd9138Patch
- https://git.kernel.org/stable/c/8930a3e1568cf534f86c8ed2def817c6d0528fc1Patch
- https://git.kernel.org/stable/c/a5158d67bff06cb6fea31be39aeb319fd908ed8ePatch
- https://git.kernel.org/stable/c/dea22de162058216a90f2706f0d0b36f0ff309fdPatch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.