Description
In 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.
Affected products
- Linux / Linux352d966126e66d825244f1185eb9f2d904c83dd4 – 35180c772f5e11e2fa4d80d3dfd50906cb6d9646
- Linux / Linux352d966126e66d825244f1185eb9f2d904c83dd4 – 91e77840bf13de3add125060cf8b32ca24a52c8c
- Linux / Linux352d966126e66d825244f1185eb9f2d904c83dd4 – d5059e52fd8bc624ec4255c9fa01a266513d126b
- Linux / Linux6.9 – 6.9
- Linux / Linux0 – 6.9
- Linux / Linux6.18.33 – 6.18.*
- Linux / Linux7.0.10 – 7.0.*
- Linux / Linux7.1 – *