---
title: "CVE-2012-2793\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-2012-2793?format=md
keywords: index, follow
---

# CVE-2012-2793

Publication date 10 September 2012

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

Toggle side navigation

## Description

Unspecified vulnerability in the lag\_decode\_zero\_run\_line function in
libavcodec/lagarith.c in FFmpeg before 0.11, and Libav 0.7.x before 0.7.7
and 0.8.x before 0.8.4, has unknown impact and attack vectors related to
"too many zeros."

[Read the notes from the security team](https://ubuntu.com/security/CVE-2012-2793?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| ffmpeg | 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.04 LTS lucid | Not affected |
| 8.04 LTS hardy | Ignored end of life |
| ffmpeg-extra | 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 11.10 oneiric | Not in release |
| 11.04 natty | Not in release |
| 10.04 LTS lucid | Not affected |
| 8.04 LTS hardy | Not in release |
| libav | 12.10 quantal | Fixed 6:0.8.4-0ubuntu0.12.10.1 |
| 12.04 LTS precise | Fixed 4:0.8.4-0ubuntu0.12.04.1 |
| 11.10 oneiric | Fixed 4:0.7.6-0ubuntu0.11.10.2 |
| 11.04 natty | Ignored end of life |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Not in release |
| libav-extra | 12.10 quantal | Fixed 6:0.8.4ubuntu0.12.10.1 |
| 12.04 LTS precise | Fixed 4:0.8.4ubuntu0.12.04.1 |
| 11.10 oneiric | Fixed 4:0.7.6ubuntu0.11.10.2 |
| 11.04 natty | Ignored end of life |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2012-2793?format=md#patch-details)

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

ffmpeg-extra in multiverse needs to have matching version
libav-extra is built with tarball produced by libav package

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| ffmpeg | * Upstream:   <http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=83c7803f55b3231faeb93c1a634399a70fae9480> |
| libav | * Upstream:   <http://git.libav.org/?p=libav.git;a=commitdiff;h=b631e4ed64f7d1b9ca8f897fda31140e8d1fad81> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2793)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2012-2793)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2012-2793)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2012-2793)

### Related Ubuntu Security Notices (USN)

+ [USN-1674-1](https://usn.ubuntu.com/USN-1674-1)
+ Libav vulnerabilities
+ 19 December 2012

+ [USN-1630-1](https://usn.ubuntu.com/USN-1630-1)
+ Libav vulnerabilities
+ 12 November 2012

### Other references

* <http://www.openwall.com/lists/oss-security/2012/09/02/4>
* <http://www.openwall.com/lists/oss-security/2012/08/31/3>
* <http://secunia.com/advisories/50468>
* <http://ffmpeg.org/security.html>
* <https://www.cve.org/CVERecord?id=CVE-2012-2793>