wifi: cfg80211: cancel wiphy_work before freeing wiphy

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Summary

CVECVE-2025-21979
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-04-01 16:15:29 UTC
Updated2026-04-06 13:39:11 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1ADPDECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ddb1bfbf4ab5c753954d0cd728253b642934a9f2 8930a3e1568cf534f86c8ed2def817c6d0528fc1 git Not specified
CNA Linux Linux affected 3fcc6d7d5f40dad56dee7bde787b7e23edd4b93c 0272d4af7f92997541d8bbf4c51918b93ded6ee2 git Not specified
CNA Linux Linux affected a3ee4dc84c4e9d14cb34dad095fd678127aca5b6 75d262ad3c36d52852d764588fcd887f0fcd9138 git Not specified
CNA Linux Linux affected a3ee4dc84c4e9d14cb34dad095fd678127aca5b6 a5158d67bff06cb6fea31be39aeb319fd908ed8e git Not specified
CNA Linux Linux affected a3ee4dc84c4e9d14cb34dad095fd678127aca5b6 dea22de162058216a90f2706f0d0b36f0ff309fd git Not specified
CNA Linux Linux affected a3ee4dc84c4e9d14cb34dad095fd678127aca5b6 72d520476a2fab6f3489e8388ab524985d6c4b90 git Not specified
CNA Linux Linux affected 6.5 Not specified
CNA Linux Linux unaffected 6.5 semver Not specified
CNA Linux Linux unaffected 6.1.132 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.84 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.20 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.8 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/75d262ad3c36d52852d764588fcd887f0fcd9138 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a5158d67bff06cb6fea31be39aeb319fd908ed8e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/dea22de162058216a90f2706f0d0b36f0ff309fd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/8930a3e1568cf534f86c8ed2def817c6d0528fc1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0272d4af7f92997541d8bbf4c51918b93ded6ee2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/05/msg00045.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Patch
git.kernel.org/stable/c/72d520476a2fab6f3489e8388ab524985d6c4b90 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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