CVE-2026-80938

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex

mt7615_suspend() acquired the mt76 mutex and then called

cancel_delayed_work_sync() on mac_work. mt7615_mac_work() acquires the

same mutex via mt7615_mutex_acquire() at the top of the worker, so if

mac_work is already running and blocked on the mutex, the suspend path

deadlocks waiting for the work it holds the mutex against.

Flush scan_work and mac_work before taking the mutex, matching the

suspend paths in mt7921 and mt7925. scan_work only takes the mt76

spinlock, but moving it keeps the sequence consistent. This also keeps

mac_work from running over an already suspended HIF, which the previous

split (async cancel under the lock, sync cancel after release) would

have allowed.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References