---
id: CVE-2026-125236
title: FFmpeg through 9.0.2 VVC Decoder Memory Leak via alloc_frame()
summary: >-
  FFmpeg through 9.0.2 contains a memory leak vulnerability in alloc_frame() in
  libavcodec/vvc/refs.c that leaks SPS and PPS references when frame buffer
  allocation fails. Attackers can supply a crafted VVC (H.266) stream that
  repeatedly r…
severity: low
cvss: 3.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'
cvssSource: cna
cwe:
  - CWE-401
vendor: FFmpeg
product: FFmpeg
affected:
  - FFmpeg <= 9.0.2
published: '2026-11-09'
updated: '2026-11-09'
sourceUpdated: '2026-11-09T19:11:46.510Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-125236'
references:
  - url: 'https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25088'
  - url: >-
      https://github.com/FFmpeg/FFmpeg/commit/a13e27336a61a3452e1ab8b4bb132c4174c67498
    label: Patch Commit
  - url: 'https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/vvc/refs.c#L133'
  - url: 'https://github.com/FFmpeg/FFmpeg'
  - url: >-
      https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-vvc-decoder-memory-leak-via-alloc-frame
    label: >-
      VulnCheck Advisory: FFmpeg through 9.0.2 VVC Decoder Memory Leak via
      alloc_frame()
tags:
  - cve.org
ingestedAt: '2026-11-09T19:18:02.583Z'
---

## Overview

FFmpeg through 9.0.2 contains a memory leak vulnerability in alloc_frame() in libavcodec/vvc/refs.c that leaks SPS and PPS references when frame buffer allocation fails. Attackers can supply a crafted VVC (H.266) stream that repeatedly replaces parameter sets, steadily growing memory use and causing denial of service.

## Affected

- `FFmpeg <= 9.0.2`

## Remediation

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