---
title: "CVE-2012-4536\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-2012-4536?format=md
keywords: index, follow
---

# CVE-2012-4536

Publication date 21 November 2012

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The (1) domain\_pirq\_to\_emuirq and (2) physdev\_unmap\_pirq functions in Xen
2.2 allows local guest OS administrators to cause a denial of service (Xen
crash) via a crafted pirq value that triggers an out-of-bounds read.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2012-4536?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| xen | 12.10 quantal | Fixed 4.1.3-3ubuntu1.1 |
| 12.04 LTS precise | Fixed 4.1.2-2ubuntu2.3 |
| 11.10 oneiric | Fixed 4.1.1-2ubuntu4.3 |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Not in release |
| xen-3.1 | 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 11.10 oneiric | Not in release |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Not affected |
| xen-3.2 | 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 11.10 oneiric | Not in release |
| 10.04 LTS lucid | Not in release |
| 8.04 LTS hardy | Not affected |
| xen-3.3 | 12.10 quantal | Not in release |
| 12.04 LTS precise | Not in release |
| 11.10 oneiric | Not in release |
| 10.04 LTS lucid | Not affected |
| 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)

## Notes

---

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

only xen 4.1 is vulnerable

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4536)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2012-4536)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2012-4536)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2012-4536)

### Other references

* <http://xforce.iss.net/xforce/xfdb/80023>
* <http://www.securitytracker.com/id?1027760>
* <http://www.openwall.com/lists/oss-security/2012/11/13/2>
* <http://osvdb.org/87297>
* <http://lists.xen.org/archives/html/xen-announce/2012-11/msg00003.html>
* <https://www.cve.org/CVERecord?id=CVE-2012-4536>