CVE-2026-80938

Unknown

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.

SeverityUnknown
CVSS—
Exploit probability—
ProductLinux
PublishedSep 11, 2026
First seenSep 11, 2026

How to fix

Update
  • Linux Linux36c73b86a09f0e51c0f81a75c8945b6c5557ff27, 33d29aeb4c0eede92622a7d04ea492b94c30f089, ef2ec8b537c3a54e241d693bd03016f80d0d4484, 3114d479f2a1d31b2e6214c395794c6e5715e579, 4506e229b2e468b8c64bcf52c50c41a3bf2e633e, 44be85af3e1772ffb3332feafedad2a73b22854c, bda8324270b1ac91bfba1df8928e0570e29759e8 or later

Affected products

ProductAffected versionsFixed in
Linux Linuxc6bf20109a3fae92402cb76ad709ec5256bcd169 ≤ v < 36c73b86a09f0e51c0f81a75c8945b6c5557ff27, c6bf20109a3fae92402cb76ad709ec5256bcd169 ≤ v < 33d29aeb4c0eede92622a7d04ea492b94c30f089, c6bf20109a3fae92402cb76ad709ec5256bcd169 ≤ v < ef2ec8b537c3a54e241d693bd03016f80d0d4484, c6bf20109a3fae92402cb76ad709ec5256bcd169 ≤ v < 3114d479f2a1d31b2e6214c395794c6e5715e579, c6bf20109a3fae92402cb76ad709ec5256bcd169 ≤ v < 4506e229b2e468b8c64bcf52c50c41a3bf2e633e, c6bf20109a3fae92402cb76ad709ec5256bcd169 ≤ v < 44be85af3e1772ffb3332feafedad2a73b22854c, c6bf20109a3fae92402cb76ad709ec5256bcd169 ≤ v < bda8324270b1ac91bfba1df8928e0570e29759e8, 5.836c73b86a09f0e51c0f81a75c8945b6c5557ff27, 33d29aeb4c0eede92622a7d04ea492b94c30f089, ef2ec8b537c3a54e241d693bd03016f80d0d4484, 3114d479f2a1d31b2e6214c395794c6e5715e579, 4506e229b2e468b8c64bcf52c50c41a3bf2e633e, 44be85af3e1772ffb3332feafedad2a73b22854c, bda8324270b1ac91bfba1df8928e0570e29759e8

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