CVE-2026-53101

wifi: mt76: mt7921: fix potential deadlock in mt7921_roc_abort_sync

MEDIUM
5.5
CVSS Score
Published: June 24, 2026 at 04:30 PM UTC
Updated: July 21, 2026 at 06:36 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.13 ≤ v < 6.18.336.19 ≤ v < 7.0.106.9 ≤ v < 6.12.956.9 ≤ v < 6.18.336.9 ≤ v < 7.0.106.9 ≤ v < 7.1352d966126e66d825244f1185eb9f2d904c83dd46.9
Vendor states this is fixed in 35180c772f5e11e2fa4d80d3dfd50906cb6d9646 (fixed)
Vendor states this is fixed in 91e77840bf13de3add125060cf8b32ca24a52c8c (fixed)
Vendor states this is fixed in b4faaa617af3f4173e64169b0ec1af8f9c5bca10 (fixed)
Vendor states this is fixed in d5059e52fd8bc624ec4255c9fa01a266513d126b (fixed)
Vendor states this is fixed in 6.12.95 (unaffected)
Vendor states this is fixed in 6.18.33 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)
Vendor states this is fixed in 7.0.10 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-667

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