---
id: CVE-2026-80947
title: >-
  kernel: wifi: rtl8xxxu: fix use-after-free from rx_urb_wq on stop
  (CVE-2026-80947)
summary: >-
  A flaw was found in the Linux kernel's `rtl8xxxu` Wi-Fi driver. A race
  condition exists during the driver's stop process, specifically when handling
  receive (RX) Universal Serial Bus (USB) Request Blocks (URBs). This allows a
  worker to acc…
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-825
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T16:46:30+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80947.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80947.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80947'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532317'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80947'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80947'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80947.mbox
  - url: 'https://git.kernel.org/stable/c/800d2b490a9af1e7132a3564c2ad5a81292e5b40'
  - url: 'https://git.kernel.org/stable/c/620acb1e8037b73a457dc8ef20fc23fc7adcb405'
  - url: 'https://git.kernel.org/stable/c/972ab8b9c08f3eb3fa535082de2950dd93604dfd'
  - url: 'https://git.kernel.org/stable/c/6c080026ecc17eecb103f8927c64ea73a74bb818'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00159
epssPercentile: 0.05437
scores:
  vendor: 5.5
  cna: 7.8
ingestedAt: '2026-09-14T15:23:07.476Z'
---

## Overview

A flaw was found in the Linux kernel's `rtl8xxxu` Wi-Fi driver. A race condition exists during the driver's stop process, specifically when handling receive (RX) Universal Serial Bus (USB) Request Blocks (URBs). This allows a worker to access memory that has already been freed, leading to a use-after-free vulnerability. This issue can result in system instability or a denial of service.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, 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-2026-80947.json)

**kernel: wifi: rtl8xxxu: fix use-after-free from rx_urb_wq on stop** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.

Affected:

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

No fix planned:

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

Not affected:

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

## Remediation

Affected