wifi: mt76: fix deadlock in remain-on-channel

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-53100
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 17:17:24 UTC
Updated2026-07-21 18:21:01 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: mt76: fix deadlock in remain-on-channel mt76_remain_on_channel() and mt76_roc_complete() call mt76_set_channel() while already holding dev->mutex. Since mt76_set_channel() also acquires dev->mutex, this results in a deadlock. Use __mt76_set_channel() instead of mt76_set_channel(). Add cancel_delayed_work_sync() for mac_work before acquiring the mutex in mt76_remain_on_channel() to prevent a secondary deadlock with the mac_work workqueue.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.001660000 probability, percentile 0.062120000 (date 2026-07-14)

Problem Types: CWE-667

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a8f424c1287cc79a06c21816658feea87dfcb83f 5fc8c5d45e44575dda9fcabdc2aac4ad97baf0cd git Not specified
CNA Linux Linux affected a8f424c1287cc79a06c21816658feea87dfcb83f 7a89c245d203aa0ed5ff2d68ac05b48b2ef9fa3f git Not specified
CNA Linux Linux affected a8f424c1287cc79a06c21816658feea87dfcb83f 6939b97ddad3cf3dfbb3b5a0a12ef79cb886747e git Not specified
CNA Linux Linux affected 6.14 Not specified
CNA Linux Linux unaffected 6.14 semver Not specified
CNA Linux Linux unaffected 6.18.33 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.10 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7a89c245d203aa0ed5ff2d68ac05b48b2ef9fa3f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5fc8c5d45e44575dda9fcabdc2aac4ad97baf0cd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6939b97ddad3cf3dfbb3b5a0a12ef79cb886747e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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