---
id: CVE-2026-125214
title: FFmpeg through 9.0.2 Heap Buffer Overflow in Blu-ray PCM Decoder
summary: >-
  FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in
  pcm_bluray_decode_frame() in libavcodec/pcm-bluray.c on big-endian hosts.
  Attackers can supply a crafted Blu-ray (M2TS) LPCM stream whose payload length
  is not a multi…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-122
vendor: FFmpeg
product: FFmpeg
affected:
  - FFmpeg <= 9.0.2
published: '2026-11-09'
updated: '2026-11-09'
sourceUpdated: '2026-11-09T19:11:30.282Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-125214'
references:
  - url: 'https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25337'
  - url: >-
      https://github.com/FFmpeg/FFmpeg/commit/a61b32df3fd67f76c1c8c7ea51be2a66efb0f945
    label: Patch Commit
  - url: 'https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/pcm-bluray.c#L170'
  - url: 'https://github.com/FFmpeg/FFmpeg'
  - url: >-
      https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-buffer-overflow-in-blu-ray-pcm-decoder
    label: >-
      VulnCheck Advisory: FFmpeg through 9.0.2 Heap Buffer Overflow in Blu-ray
      PCM Decoder
tags:
  - cve.org
ingestedAt: '2026-11-09T19:18:02.594Z'
---

## Overview

FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in pcm_bluray_decode_frame() in libavcodec/pcm-bluray.c on big-endian hosts. Attackers can supply a crafted Blu-ray (M2TS) LPCM stream whose payload length is not a multiple of the sample size, writing attacker-controlled bytes past the audio frame buffer.

## Affected

- `FFmpeg <= 9.0.2`

## Remediation

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