---
id: CVE-2026-89610
title: 'kernel: ntfs: verify run length exceeding volume boundary (CVE-2026-89610)'
summary: >-
  A flaw was found in the Linux kernel's NTFS component. The mapping pairs
  decoder fails to verify if a run length extends beyond the volume boundary. A
  local attacker could exploit this by providing a malformed NTFS image with a
  crafted map…
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-787
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
affected:
  - openshift_container_platform 4
published: '2026-09-11'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T10:31:46+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89610.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89610.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89610'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532418'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89610'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89610'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89610.mbox
  - url: 'https://git.kernel.org/stable/c/6e844d4b82434a781b80d02145fd1b17cf90e3c3'
  - url: 'https://git.kernel.org/stable/c/fea9e4488f384c0ef1c0e3d96b565127c1b98447'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
  - score-dispute
epss: 0.00553
epssPercentile: 0.43773
scores:
  vendor: 7
  cna: 9.8
ingestedAt: '2026-09-14T15:23:07.474Z'
---

## Overview

A flaw was found in the Linux kernel's NTFS component. The mapping pairs decoder fails to verify if a run length extends beyond the volume boundary. A local attacker could exploit this by providing a malformed NTFS image with a crafted mapping pairs array. This could lead to memory corruption and potentially allow for privilege escalation.

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89610.json)

**kernel: ntfs: verify run length exceeding volume boundary** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-15.

Not 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

## Remediation

Refer to the advisory for fix availability.