---
id: CVE-2026-80878
title: 'kernel: afs: Fix leak of ungot volume (CVE-2026-80878)'
summary: >-
  A flaw was found in the Linux kernel's AFS (Andrew File System)
  implementation. This issue occurs when `afs_lookup_volume_rcu()` fails to
  acquire a volume, leading to a resource leak. A local attacker could
  potentially exploit this flaw to…
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-911
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-04'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T18:07:26+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80878.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80878.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80878'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2528730'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80878'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80878'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80878.mbox
  - url: 'https://git.kernel.org/stable/c/7d10cfec6cbce7396ed5cf6abd8c34bae09c393b'
  - url: 'https://git.kernel.org/stable/c/78e8ee25a5e8f2eb85bbabbeb15c8a2445b4a67f'
  - url: 'https://git.kernel.org/stable/c/9cabf1c86948793fbad09023bd2ec58c71b9c1d4'
  - url: 'https://git.kernel.org/stable/c/d672c276f685a540ed2b2a8bafaed4650a89022c'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00156
epssPercentile: 0.04724
ingestedAt: '2026-09-14T15:23:07.456Z'
---

## Overview

A flaw was found in the Linux kernel's AFS (Andrew File System) implementation. This issue occurs when `afs_lookup_volume_rcu()` fails to acquire a volume, leading to a resource leak. A local attacker could potentially exploit this flaw to cause a denial of service due to resource exhaustion.

## Vendor advisories

- **Red Hat VEX** · Important · 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 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80878.json)

**kernel: afs: Fix leak of ungot volume** — rated Important by Red Hat. Released 2026-09-04, updated 2026-10-06.

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