VulnerabilityPublished 24 Jun 2026Updated 6 Nov 2026

CVE-2026-53100: Linux kernel · wifi: mt76: fix deadlock in remain-on-channel

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in 6939b97ddad3cf3dfbb3b5a0a12ef79cb886747e : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in 6939b97ddad3cf3dfbb3b5a0a12ef79cb886747e, 7a89c245d203aa0ed5ff2d68ac05b48b2ef9fa3f, 5fc8c5d45e44575dda9fcabdc2aac4ad97baf0cd

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to 6939b97ddad3cf3dfbb3b5a0a12ef79cb886747e, 7a89c245d203aa0ed5ff2d68ac05b48b2ef9fa3f or 5fc8c5d45e44575dda9fcabdc2aac4ad97baf0cd.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ a8f424c1287cc79a06c21816658feea87dfcb83f, < 6939b97ddad3cf3dfbb3b5a0a12ef79cb886747e	Fixed in 6939b97ddad3cf3dfbb3b5a0a12ef79cb886747e
LinuxLinux	Affected ≥ a8f424c1287cc79a06c21816658feea87dfcb83f, < 7a89c245d203aa0ed5ff2d68ac05b48b2ef9fa3f	Fixed in 7a89c245d203aa0ed5ff2d68ac05b48b2ef9fa3f
LinuxLinux	Affected ≥ a8f424c1287cc79a06c21816658feea87dfcb83f, < 5fc8c5d45e44575dda9fcabdc2aac4ad97baf0cd	Fixed in 5fc8c5d45e44575dda9fcabdc2aac4ad97baf0cd
LinuxLinux	Affected =6.14	Fixed in–

Description

In 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.

References

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