wifi: mt76: mt7921: fix potential deadlock in mt7921_roc_abort_sync

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Summary

CVECVE-2026-53101
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 17:17:24 UTC
Updated2026-07-04 12:16:58 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: fix potential deadlock in mt7921_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() -> mt7921_mac_sta_remove() -> mt7921_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.

Risk And Classification

EPSS: 0.001660000 probability, percentile 0.062410000 (date 2026-06-29)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 352d966126e66d825244f1185eb9f2d904c83dd4 b4faaa617af3f4173e64169b0ec1af8f9c5bca10 git Not specified
CNA Linux Linux affected 352d966126e66d825244f1185eb9f2d904c83dd4 35180c772f5e11e2fa4d80d3dfd50906cb6d9646 git Not specified
CNA Linux Linux affected 352d966126e66d825244f1185eb9f2d904c83dd4 91e77840bf13de3add125060cf8b32ca24a52c8c git Not specified
CNA Linux Linux affected 352d966126e66d825244f1185eb9f2d904c83dd4 d5059e52fd8bc624ec4255c9fa01a266513d126b git Not specified
CNA Linux Linux affected 6.9 Not specified
CNA Linux Linux unaffected 6.9 semver Not specified
CNA Linux Linux unaffected 6.12.95 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/b4faaa617af3f4173e64169b0ec1af8f9c5bca10 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/91e77840bf13de3add125060cf8b32ca24a52c8c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/35180c772f5e11e2fa4d80d3dfd50906cb6d9646 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d5059e52fd8bc624ec4255c9fa01a266513d126b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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