---
id: CVE-2026-80944
title: >-
  kernel: wifi: mwifiex: Detach sync cmd buffer on interrupted wait
  (CVE-2026-80944)
summary: >-
  A flaw was found in the Linux kernel's mwifiex Wi-Fi driver. When a
  synchronous command's wait operation is interrupted, the driver can attempt to
  write data to a memory location that has already been released. This memory
  corruption can l…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: vendor
cwe: CWE-787
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T15:54:43+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80944.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80944.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80944'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532163'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80944'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80944'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80944.mbox
  - url: 'https://git.kernel.org/stable/c/8c67b8c50286e0cb7f18d667e6a37a2ec6e08ff9'
  - url: 'https://git.kernel.org/stable/c/9024c7729eb523cf4f3a4203966d3a4aaabf030d'
  - url: 'https://git.kernel.org/stable/c/9e06c9c8a1f10c55d9bc5d139656d58795e64483'
  - url: 'https://git.kernel.org/stable/c/f2134d6ff30cd6e1bf63d6b0a5d8e0839f0168b3'
  - url: 'https://git.kernel.org/stable/c/20ee9c03f261bf6ac59331e2ca7b46b23646412a'
  - url: 'https://git.kernel.org/stable/c/b1bbeb8970eeb6c6bf3cd5314138103f7b69446d'
  - url: 'https://git.kernel.org/stable/c/d29a165588b6a0cf7a38db5cbd602aef7ef8c658'
  - url: 'https://git.kernel.org/stable/c/ef06882c7d8a7400b67d0d003b1008093dd589ed'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00129
epssPercentile: 0.02908
scores:
  vendor: 7
  cna: 7.8
ingestedAt: '2026-09-14T15:23:07.455Z'
---

## Overview

A flaw was found in the Linux kernel's mwifiex Wi-Fi driver. When a synchronous command's wait operation is interrupted, the driver can attempt to write data to a memory location that has already been released. This memory corruption can lead to a system crash (kernel panic), resulting in a Denial of Service (DoS).

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80944.json)

**kernel: wifi: mwifiex: Detach sync cmd buffer on interrupted wait** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.

Affected:

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

No fix planned:

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

Not affected:

- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7

## Remediation

Affected