wifi: mt76: mt7925: fix potential deadlock in mt7925_roc_abort_sync

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Summary

CVECVE-2026-53103
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 17:17:24 UTC
Updated2026-06-24 17:17:24 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: fix potential deadlock in mt7925_roc_abort_sync roc_abort_sync() can deadlock with roc_work(). roc_work() holds dev->mt76.mutex, while cancel_work_sync() waits for roc_work() to finish. If the caller already owns the same mutex, both sides block and no progress is possible. This deadlock can occur during station removal when mt76_sta_state() -> mt76_sta_remove() -> mt7925_mac_sta_remove_link() -> mt7925_mac_link_sta_remove() -> mt7925_roc_abort_sync() invokes cancel_work_sync() while roc_work() is still running and holding dev->mt76.mutex. This avoids the mutex deadlock and preserves exactly-once work ownership.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 45064d19fd3af6aeb0887b35b5564927980cf150 153bcba36c87a1ba555b57b6c49028d5812f895b git Not specified
CNA Linux Linux affected 45064d19fd3af6aeb0887b35b5564927980cf150 2d8e0053bca29143ace51e08c980ff076844a4b0 git Not specified
CNA Linux Linux affected 45064d19fd3af6aeb0887b35b5564927980cf150 dd08ca3f092f4185ece69ce2a835c23198b1628a git Not specified
CNA Linux Linux affected 978d1756b3ae1b857826eb7ed8181f3c5180dce9 git Not specified
CNA Linux Linux affected 6.11.2 6.12 semver Not specified
CNA Linux Linux affected 6.12 Not specified
CNA Linux Linux unaffected 6.12 semver Not specified
CNA Linux Linux unaffected 6.18.33 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.10 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/dd08ca3f092f4185ece69ce2a835c23198b1628a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2d8e0053bca29143ace51e08c980ff076844a4b0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/153bcba36c87a1ba555b57b6c49028d5812f895b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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