---
title: "CVE-2014-1642\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-2014-1642?format=md
keywords: index, follow
---

# CVE-2014-1642

Publication date 26 January 2014

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

Toggle side navigation

## Description

The IRQ setup in Xen 4.2.x and 4.3.x, when using device passthrough and
configured to support a large number of CPUs, frees certain memory that may
still be intended for use, which allows local guest administrators to cause
a denial of service (memory corruption and hypervisor crash) and possibly
execute arbitrary code via vectors related to an out-of-memory error that
triggers a (1) use-after-free or (2) double free.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2014-1642?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| xen | 13.10 saucy | Fixed 4.3.0-1ubuntu1.3 |
| 13.04 raring | Ignored end of life |
| 12.10 quantal | Fixed 4.1.5-0ubuntu0.12.10.3 |
| 12.04 LTS precise | Fixed 4.1.5-0ubuntu0.12.04.3 |
| 10.04 LTS lucid | Not in release |
| xen-3.3 | 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 | Not affected |

---

* [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-2014-1642?format=md#patch-details)

## Notes

---

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

This is XSA-83

### 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 |
| --- | --- |
| xen | * Upstream:   <http://xenbits.xen.org/xsa/xsa83.patch> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1642)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2014-1642)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2014-1642)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2014-1642)

### Other references

* <http://www.openwall.com/lists/oss-security/2014/01/23/2>
* <http://lists.xen.org/archives/html/xen-announce/2014-01/msg00000.html>
* <https://www.cve.org/CVERecord?id=CVE-2014-1642>