---
id: CVE-2026-80938
title: >-
  kernel: wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex
  (CVE-2026-80938)
summary: >-
  A flaw was found in the Linux kernel, specifically within the `mt7615` Wi-Fi
  driver. A deadlock can occur during system suspend operations when the suspend
  process attempts to acquire a mutex (a locking mechanism) while simultaneously
  wait…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-833
vendor: Red Hat
product: Linux
affected:
  - >-
    Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 <
    36c73b86a09f0e51c0f81a75c8945b6c5557ff27
  - >-
    Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 <
    33d29aeb4c0eede92622a7d04ea492b94c30f089
  - >-
    Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 <
    ef2ec8b537c3a54e241d693bd03016f80d0d4484
  - >-
    Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 <
    3114d479f2a1d31b2e6214c395794c6e5715e579
  - >-
    Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 <
    4506e229b2e468b8c64bcf52c50c41a3bf2e633e
  - >-
    Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 <
    44be85af3e1772ffb3332feafedad2a73b22854c
  - >-
    Linux >= c6bf20109a3fae92402cb76ad709ec5256bcd169 <
    bda8324270b1ac91bfba1df8928e0570e29759e8
  - Linux 5.8
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T15:54:29+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80938.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80938.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80938'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532443'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80938'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80938'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80938.mbox
  - url: 'https://git.kernel.org/stable/c/36c73b86a09f0e51c0f81a75c8945b6c5557ff27'
  - url: 'https://git.kernel.org/stable/c/33d29aeb4c0eede92622a7d04ea492b94c30f089'
  - url: 'https://git.kernel.org/stable/c/ef2ec8b537c3a54e241d693bd03016f80d0d4484'
  - url: 'https://git.kernel.org/stable/c/3114d479f2a1d31b2e6214c395794c6e5715e579'
  - url: 'https://git.kernel.org/stable/c/4506e229b2e468b8c64bcf52c50c41a3bf2e633e'
  - url: 'https://git.kernel.org/stable/c/44be85af3e1772ffb3332feafedad2a73b22854c'
  - url: 'https://git.kernel.org/stable/c/bda8324270b1ac91bfba1df8928e0570e29759e8'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00215
epssPercentile: 0.10519
ingestedAt: '2026-09-14T15:23:07.455Z'
---

## Overview

A flaw was found in the Linux kernel, specifically within the `mt7615` Wi-Fi driver. A deadlock can occur during system suspend operations when the suspend process attempts to acquire a mutex (a locking mechanism) while simultaneously waiting for a work item (`mac_work`) that also requires the same mutex. If `mac_work` is already running and blocked on the mutex, the suspend path will indefinitely wait for the work it holds the mutex against. This can result in a Denial of Service (DoS), making the system unresponsive.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80938.json)

**kernel: wifi: mt76: mt7615: avoid waiting for mac work under the mt76 mutex** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.

Not affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4

## Remediation

Refer to the advisory for fix availability.