CVE-2026-53101 Details
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.
A potential deadlock vulnerability has been identified in the Linux kernel's WiFi MT76 MT7921 driver. The issue arises in the 'mt7921_roc_abort_sync' function, where 'roc_work' holds a mutex while 'cancel_work_sync' waits for 'roc_work' to complete. If the same mutex is already owned by the caller, this creates a deadlock, blocking progress. This situation can occur during station removal, leading to a deadlock scenario. The vulnerability has been addressed by modifying the work cancellation process to prevent the mutex deadlock, ensuring smooth operation and correct work ownership.
The vulnerability has been fixed in the Linux kernel. Users should upgrade to the latest version where this issue has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/35180c772f5e11e2fa4d80d3dfd50906cb6d9646 | kernel.org | Patch |
| https://git.kernel.org/stable/c/91e77840bf13de3add125060cf8b32ca24a52c8c | kernel.org | Patch |
| https://git.kernel.org/stable/c/b4faaa617af3f4173e64169b0ec1af8f9c5bca10 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d5059e52fd8bc624ec4255c9fa01a266513d126b | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-667 | Improper Locking | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.9, < 6.12.95 >= 6.13, < 6.18.33 >= 6.19, < 7.0.10 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 21, 2026 | Initial Analysis | [email protected] |
| Jul 4, 2026 | CVE Modified | kernel.org |
| Jun 24, 2026 | New CVE Received | kernel.org |