CVE-2026-80938

Suspend hang via mt76 mutex self-deadlock

Published Sep 11, 2026 · Updated Sep 11, 2026

Deadlock in the mt7615 Wi-Fi suspend path in affected Linux kernels allows attackers to hang system suspension on supported hardware. The mt7615_suspend() path holds the mt76 mutex while synchronously canceling mac_work, whose worker attempts to acquire the same mutex and cannot finish. Exposure requires an MT7615-backed Wi-Fi interface and the race in which mac_work is already running and blocked when suspension begins, leaving the suspend operation hung.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deadlock in the mt7615 Wi-Fi suspend path in affected Linux kernels allows attackers to hang system suspension on supported hardware. The mt7615_suspend() path holds the mt76 mutex while synchronously canceling mac_work, whose worker attempts to acquire the same mutex and cannot finish. Exposure requires an MT7615-backed Wi-Fi interface and the race in which mac_work is already running and blocked when suspension begins, leaving the suspend operation hung.

The record

CVE
CVE-2026-80938
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.8
  2. Affected versionversion=c6bf20109a3fae92402cb76ad709ec5256bcd169 <3114d479f2a1d31b2e6214c395794c6e5715e579
  3. Affected versionversion=c6bf20109a3fae92402cb76ad709ec5256bcd169 <44be85af3e1772ffb3332feafedad2a73b22854c
  4. Affected versionversion=c6bf20109a3fae92402cb76ad709ec5256bcd169 <4506e229b2e468b8c64bcf52c50c41a3bf2e633e
  5. Affected versionversion=c6bf20109a3fae92402cb76ad709ec5256bcd169 <bda8324270b1ac91bfba1df8928e0570e29759e8

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=c6bf20109a3fae92402cb76ad709ec5256bcd169 <3114d479f2a1d31b2e6214c395794c6e5715e579; version=c6bf20109a3fae92402cb76ad709ec5256bcd169 <44be85af3e1772ffb3332feafedad2a73b22854c; version=c6bf20109a3fae92402cb76ad709ec5256bcd169 <4506e229b2e468b8c64bcf52c50c41a3bf2e633e; version=c6bf20109a3fae92402cb76ad709ec5256bcd169 <bda8324270b1ac91bfba1df8928e0570e29759e8

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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