---
id: CVE-2026-80971
title: 'kernel: ALSA: bcd2000: clear the URB pointers on disconnect (CVE-2026-80971)'
summary: >-
  A flaw was found in the ALSA bcd2000 driver of the Linux kernel. When a USB
  device using this driver is disconnected while a rawmidi substream is still
  active, the driver fails to clear the Universal Serial Bus Request Block (URB)
  pointers…
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 6
  - enterprise_linux 7
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T18:26:21+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80971.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80971.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80971'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532082'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80971'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80971'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80971.mbox
  - url: 'https://git.kernel.org/stable/c/9af08677aa57debaca5b57c8045c52a83d3dd376'
  - url: 'https://git.kernel.org/stable/c/5a77febac6faf6da40fbb4555f703eeb91b58130'
  - url: 'https://git.kernel.org/stable/c/3c00004f134fc819f9d9e202c6a64acde0a1f8d0'
  - url: 'https://git.kernel.org/stable/c/6c07aad8a7c9ef8ebc4d03a964b882123a349a2e'
  - url: 'https://git.kernel.org/stable/c/eb482a06791d6168beb8c78cc904ac5a5ed96a55'
  - url: 'https://git.kernel.org/stable/c/7df3194bdb7479cad9199889655a566a2c0c1d1b'
  - url: 'https://git.kernel.org/stable/c/b06ebc7fe25a6af4a9f6e4a3d4236a4178ad4b01'
  - url: 'https://git.kernel.org/stable/c/459d3a64766f5ca2f1886daeaf24582831a5f5ab'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00159
epssPercentile: 0.05519
scores:
  vendor: 7
  cna: 7.8
ingestedAt: '2026-09-14T15:23:07.455Z'
---

## Overview

A flaw was found in the ALSA bcd2000 driver of the Linux kernel. When a USB device using this driver is disconnected while a rawmidi substream is still active, the driver fails to clear the Universal Serial Bus Request Block (URB) pointers. This oversight allows a local attacker to trigger a use-after-free vulnerability, leading to memory corruption. This can result in a denial of service or potentially arbitrary code execution.

## Vendor advisories

- **Red Hat VEX** · Moderate · 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 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80971.json)

**kernel: ALSA: bcd2000: clear the URB pointers on disconnect** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.

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

No fix planned:

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

## Remediation

Out of support scope