---
title: "CVE-2011-2821\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-2011-2821?format=md
keywords: index, follow
---

# CVE-2011-2821

Publication date 29 August 2011

Last updated 24 July 2024

---

Ubuntu priority

**Low**

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

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## Description

Double free vulnerability in libxml2, as used in Google Chrome before
13.0.782.215, allows remote attackers to cause a denial of service or
possibly have unspecified other impact via a crafted XPath expression.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2011-2821?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| chromium-browser | 11.10 oneiric | Not affected |
| 11.04 natty | Fixed 14.0.835.202~r103287-0ubuntu0.11.04.1 |
| 10.10 maverick | Fixed 14.0.835.202~r103287-0ubuntu0.10.10.1 |
| 10.04 LTS lucid | Fixed 14.0.835.202~r103287-0ubuntu0.10.04.2 |
| 8.04 LTS hardy | Not in release |
| libxml2 | 11.10 oneiric | Fixed 2.7.8.dfsg-4ubuntu0.1 |
| 11.04 natty | Fixed 2.7.8.dfsg-2ubuntu0.2 |
| 10.10 maverick | Fixed 2.7.7.dfsg-4ubuntu0.3 |
| 10.04 LTS lucid | Fixed 2.7.6.dfsg-1ubuntu1.3 |
| 8.04 LTS hardy | Ignored |

---

* [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-2011-2821?format=md#patch-details)

## Notes

---

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

debian says it's
http://git.gnome.org/browse/libxml2/commit/?id=fec31bcd452e77c10579467ca87a785b41115de6

---

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

patch too risky for Ubuntu 8.04 LTS

### 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 |
| --- | --- |
| libxml2 | * Upstream:   [?id=f50](http://git.gnome.org/browse/libxml2/commit/?id=f5048b3e71fc30ad096970b8df6e7af073bae4cb) * Upstream:   [?id=fec](http://git.gnome.org/browse/libxml2/commit/?id=fec31bcd452e77c10579467ca87a785b41115de6) |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2821)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-2821)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-2821)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-2821)

### Related Ubuntu Security Notices (USN)

+ [USN-1334-1](https://usn.ubuntu.com/USN-1334-1)
+ libxml2 vulnerabilities
+ 19 January 2012

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2011-2821>