CVE-2026-53103

Summary

In 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.

Affected Software

Weaknesses

References

• https://git.kernel.org/stable/c/153bcba36c87a1ba555b57b6c49028d5812f895b
• https://git.kernel.org/stable/c/2d8e0053bca29143ace51e08c980ff076844a4b0
• https://git.kernel.org/stable/c/dd08ca3f092f4185ece69ce2a835c23198b1628a

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