---
id: CVE-2026-89088
title: 'Parted: parted: denial of service via heap buffer overflow during fat16 resize'
summary: >-
  A flaw was found in parted. A heap-based buffer overflow exists in libparted's
  file system resizing logic when handling FAT16 volumes. By convincing a user
  or administrator to resize a specially crafted FAT16 file system image with
  malfo…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-787
vendor: Red Hat
product: parted
affected:
  - parted (all versions)
  - parted
  - parted (all versions)
  - parted (all versions)
  - parted (all versions)
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T23:06:18.907Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-89088'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89088'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2462951'
    label: RHBZ#2462951
tags:
  - cve.org
ingestedAt: '2026-10-16T23:56:06.874Z'
---

## Overview

A flaw was found in parted. A heap-based buffer overflow exists in libparted's file system resizing logic when handling FAT16 volumes. By convincing a user or administrator to resize a specially crafted FAT16 file system image with malformed directory metadata, an attacker can trigger an oversized read into a fixed-size memory buffer. This issue causes memory corruption, resulting in an application crash and a denial of service (DoS).

## Affected

- `parted (all versions)`
- `parted`
- `parted (all versions)`
- `parted (all versions)`
- `parted (all versions)`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

### Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.