CVE-2026-53103
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk1th percentile - higher than 1% of all known CVEs
Summary
In the Linux kernel, the mt7925 driver (mt76) has a potential deadlock in mt7925_roc_abort_sync. It calls cancel_work_sync() while roc_work() holds dev->mt76.mutex, causing a lockup. This occurs during station removal.
Risk Assessment
Deadlock can cause system hang or WiFi driver crash, leading to wireless network unavailability.
Recommendation
Apply the Linux kernel patch that fixes this deadlock (e.g., update to a patched kernel version).
Original NVD description (English source)
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.