---
id: CVE-2026-89085
title: 'Parted: parted: heap-based buffer overflow via crafted fat32 filesystem image'
summary: >-
  A flaw was found in parted. A heap-based buffer overflow can occur when
  processing a specially crafted FAT32 filesystem due to an integer calculation
  error during buffer allocation. A local attacker could exploit this by
  enticing a user …
severity: medium
cvss: 6.6
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/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: '2026-10-16T23:04:28.673Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-89085'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89085'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2466034'
    label: RHBZ#2466034
tags:
  - cve.org
ingestedAt: '2026-10-16T23:56:06.875Z'
---

## Overview

A flaw was found in parted. A heap-based buffer overflow can occur when processing a specially crafted FAT32 filesystem due to an integer calculation error during buffer allocation. A local attacker could exploit this by enticing a user or automated service to open a malicious filesystem image, resulting in an application crash leading to a Denial of Service (DoS) or potential memory corruption.

## 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.