---
title: "CVE-2011-3946\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2011-3946?format=md
keywords: index, follow
---

# CVE-2011-3946

Publication date 9 December 2013

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

Toggle side navigation

## Description

The ff\_h264\_decode\_sei function in libavcodec/h264\_sei.c in FFmpeg before
0.10 allows remote attackers to have an unspecified impact via crafted
Supplemental enhancement information (SEI) data, which triggers an infinite
loop.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| ffmpeg | 13.10 saucy | Not in release |
| 13.04 raring | Not in release |
| 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 10.04 LTS lucid | Ignored end of life |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3946)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-3946)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-3946)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-3946)

### Other references

* <http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=9decfc17bb76da34734296048d390b176abf404c>
* <http://www.ffmpeg.org/security.html>
* <https://www.cve.org/CVERecord?id=CVE-2011-3946>