wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80938
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:18:58 UTC
Updated2026-09-11 20:18:58 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex mt7615_suspend() acquired the mt76 mutex and then called cancel_delayed_work_sync() on mac_work. mt7615_mac_work() acquires the same mutex via mt7615_mutex_acquire() at the top of the worker, so if mac_work is already running and blocked on the mutex, the suspend path deadlocks waiting for the work it holds the mutex against. Flush scan_work and mac_work before taking the mutex, matching the suspend paths in mt7921 and mt7925. scan_work only takes the mt76 spinlock, but moving it keeps the sequence consistent. This also keeps mac_work from running over an already suspended HIF, which the previous split (async cancel under the lock, sync cancel after release) would have allowed.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.063210000 (date 2026-09-12)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c6bf20109a3fae92402cb76ad709ec5256bcd169 3114d479f2a1d31b2e6214c395794c6e5715e579 git Not specified
CNA Linux Linux affected c6bf20109a3fae92402cb76ad709ec5256bcd169 4506e229b2e468b8c64bcf52c50c41a3bf2e633e git Not specified
CNA Linux Linux affected c6bf20109a3fae92402cb76ad709ec5256bcd169 44be85af3e1772ffb3332feafedad2a73b22854c git Not specified
CNA Linux Linux affected c6bf20109a3fae92402cb76ad709ec5256bcd169 bda8324270b1ac91bfba1df8928e0570e29759e8 git Not specified
CNA Linux Linux affected 5.8 Not specified
CNA Linux Linux unaffected 5.8 semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/44be85af3e1772ffb3332feafedad2a73b22854c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3114d479f2a1d31b2e6214c395794c6e5715e579 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4506e229b2e468b8c64bcf52c50c41a3bf2e633e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bda8324270b1ac91bfba1df8928e0570e29759e8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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