---
id: CVE-2026-80967
title: >-
  kernel: ALSA: pcxhr: initialize mutexes before requesting threaded IRQ
  (CVE-2026-80967)
summary: >-
  A flaw was found in the ALSA pcxhr driver within the Linux kernel. The
  `pcxhr_probe()` function requests a threaded interrupt before properly
  initializing a critical mutex (`mgr->lock`). This oversight could allow an
  early interrupt to ope…
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-909
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: '2026-09-14T18:27:18+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80967.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80967.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80967'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532200'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80967'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80967'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80967.mbox
  - url: 'https://git.kernel.org/stable/c/039602d6ddb1febbb0561b30dab04461f78a1319'
  - url: 'https://git.kernel.org/stable/c/a5f405adb0229c9cf64eb3d695c333c92e3d3d4f'
  - url: 'https://git.kernel.org/stable/c/ede25b7fea0d7487ee8528bf35dc7b9a1cbcd814'
  - url: 'https://git.kernel.org/stable/c/c069b3cfd753d6688ea0271c43553631ab38ce10'
  - url: 'https://git.kernel.org/stable/c/7ef9ad82d95dd3c74570d80a689a0570fbc7539e'
  - url: 'https://git.kernel.org/stable/c/7cf280fbef5db6310e1b32074c8c34d1ba459796'
  - url: 'https://git.kernel.org/stable/c/6c97817e20598e5473094e0e38d1f51f1cf4dfff'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00182
epssPercentile: 0.08072
scores:
  vendor: 5.5
  cna: 8.4
ingestedAt: '2026-09-14T15:23:07.455Z'
---

## Overview

A flaw was found in the ALSA pcxhr driver within the Linux kernel. The `pcxhr_probe()` function requests a threaded interrupt before properly initializing a critical mutex (`mgr->lock`). This oversight could allow an early interrupt to operate on an uninitialized mutex, potentially leading to system instability or a denial of service (DoS) condition. A local attacker could potentially exploit this to impact system availability.

## Vendor advisories

- **Red Hat VEX** · Low · 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-2026-80967.json)

**kernel: ALSA: pcxhr: initialize mutexes before requesting threaded IRQ** — rated Low 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