---
id: CVE-2026-53369
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  udf: reject descriptors with oversized CRC length

  udf_read_tagged() skips CRC verification when descCRCLength +
  sizeof(struct tag) exceeds the block size
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  udf: reject descriptors with oversized CRC length

  udf_read_tagged() skips CRC verification when descCRCLength +
  sizeof(struct tag) exceeds the block size.  A crafted U…
severity: none
published: '2026-07-19'
updated: '2026-07-19'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53369'
references:
  - url: 'https://git.kernel.org/stable/c/1873eb81c65d3f849418d7386baa39c439c9fc38'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/31605bbe94557bff721eaf041001169d44ac6f98'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/3dede76d525919bb966f9213e131af685de5ff99'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/50dfaf4a027742b4fcdc3e9305e7199ece9bc6a6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/55d41b0a20128e86b9e960dd2e3f0a2d69a18df7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/7d1b6adbf90df6c8941090d5646fbeca25ba9770'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/832ab4a882dc9b3c0155490d9993642ef545fd22'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fdb26e628d2a211a23815d375bd33bdf863344e2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00147
epssPercentile: 0.04298
ingestedAt: '2026-07-19T14:31:07.197Z'
---

## Overview

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

udf: reject descriptors with oversized CRC length

udf_read_tagged() skips CRC verification when descCRCLength +
sizeof(struct tag) exceeds the block size.  A crafted UDF image can
set descCRCLength to an oversized value to bypass CRC validation
entirely; the descriptor is then accepted based solely on the 8-bit
tag checksum, which is trivially recomputable.

Reject such descriptors instead of silently accepting them.  A
legitimate single-block descriptor should never have a CRC length that
exceeds the block.

## Remediation

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