---
id: CVE-2026-80805
title: 'kernel: xfs: validate attr entry pointer before field access (CVE-2026-80805)'
summary: >-
  A flaw was found in the Linux kernel's XFS filesystem. The
  xfs_attr3_leaf_verify_entry() function fails to validate an attribute entry
  pointer before accessing its fields. A local attacker could exploit this by
  crafting a malicious attribu…
severity: medium
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe: CWE-20
vendor: Red Hat
product: Red Hat Enterprise Linux 9
affected:
  - enterprise_linux 10
  - enterprise_linux 8
  - enterprise_linux 9
  - openshift_container_platform 4
published: '2026-09-04'
updated: '2026-10-25'
sourceUpdated: '2026-10-25T23:29:30+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80805.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80805.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-80805'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2528586'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-80805'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80805'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80805.mbox
  - url: 'https://kernelcve.org/list/?q=CVE-2026-80805'
  - url: 'https://git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4'
  - url: 'https://git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de'
  - url: 'https://git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c'
  - url: 'https://git.kernel.org/stable/c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c'
  - url: 'https://git.kernel.org/stable/c/98a42bb9d60d42898c3494de351a1bf508348cde'
  - url: 'https://git.kernel.org/stable/c/184c1a80421a5b5ddcd262e47980ce2e67fee211'
  - url: 'https://git.kernel.org/stable/c/9f92e749fc08b7ff3d9da190c4d1b2273745b282'
  - url: 'https://git.kernel.org/stable/c/c35da2bac6f7cb9a9be73f188b4fcc324615c327'
  - url: 'https://git.kernel.org/stable/c/b7eea80be25f3334f131d52982b3131aba77b97d'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00195
epssPercentile: 0.09131
ingestedAt: '2026-10-19T10:20:54.959Z'
---

## Overview

A flaw was found in the Linux kernel's XFS filesystem. The xfs_attr3_leaf_verify_entry() function fails to validate an attribute entry pointer before accessing its fields. A local attacker could exploit this by crafting a malicious attribute index (nameidx) to cause an out-of-bounds read. This could lead to the disclosure of sensitive information or a denial of service.

## 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 2026-10-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80805.json)

**kernel: xfs: validate attr entry pointer before field access** — rated Moderate by Red Hat. Released 2026-09-04, updated 2026-10-25.

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

Fix deferred