---
id: CVE-2026-80598
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ntfs3: fix out-of-bounds read in decompress_lznt

  decompress_lznt() does not validate array index bounds before accessing
  the decompression table
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ntfs3: fix out-of-bounds read in decompress_lznt

  decompress_lznt() does not validate array index bounds before accessing
  the decompression table. A corrupted NTFS3 ima…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
published: '2026-08-28'
updated: '2026-08-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-80598'
references:
  - url: 'https://git.kernel.org/stable/c/1113fa5b01a47a1a4cdbb9c695197ca6215f02a8'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/61415ffa365d2eca6986914afd0d1412444aa1dd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7160a57192fb16d7a6fa9b7f5c7ac341d2444a89'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a93980141253c932aa6ae5d4422d90e0162dc774'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bd77afca2ae9b6d44d37902e3ad672ebb028b070'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c694f8ea2611e7413b3f04ee47e04a9b7b45817b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ff05a98150ebb2b03919a9c05c576681e86abbb7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00176
epssPercentile: 0.06262
ingestedAt: '2026-08-29T21:42:36.934Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

ntfs3: fix out-of-bounds read in decompress_lznt

decompress_lznt() does not validate array index bounds before accessing
the decompression table. A corrupted NTFS3 image with invalid compressed
data can trigger an out-of-bounds read.

Add index bounds checking to prevent the OOB access.

## Remediation

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