---
title: "CVE-2009-3640\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-2009-3640?format=md
keywords: index, follow
---

# CVE-2009-3640

Publication date 29 October 2009

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The update\_cr8\_intercept function in arch/x86/kvm/x86.c in the KVM
subsystem in the Linux kernel before 2.6.32-rc1 does not properly handle
the absence of an Advanced Programmable Interrupt Controller (APIC), which
allows local users to cause a denial of service (NULL pointer dereference
and system crash) or possibly gain privileges via a call to the
kvm\_vcpu\_ioctl function.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| kvm | 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 9.10 karmic | Not in release |
| 9.04 jaunty | Ignored end of life |
| 8.10 intrepid | Ignored end of life, was needs-triage |
| 8.04 LTS hardy | Ignored end of life |
| 6.06 LTS dapper | Not in release |
| linux | 11.04 natty | Not affected |
| 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 9.04 jaunty | Not affected |
| 8.10 intrepid | Not affected |
| 8.04 LTS hardy | Not affected |
| 6.06 LTS dapper | Not in release |
| linux-ec2 | 11.04 natty | Not in release |
| 10.10 maverick | Ignored end of life |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 9.04 jaunty | Not in release |
| 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not in release |
| linux-fsl-imx51 | 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not in release |
| linux-lts-backport-maverick | 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not in release |
| 9.04 jaunty | Not in release |
| 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not in release |
| linux-mvl-dove | 11.04 natty | Not in release |
| 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Ignored end of life |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not in release |
| linux-source-2.6.15 | 11.04 natty | Not in release |
| 10.10 maverick | Not in release |
| 10.04 LTS lucid | Not in release |
| 9.10 karmic | Not in release |
| 9.04 jaunty | Not in release |
| 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not affected |
| linux-ti-omap4 | 11.04 natty | Not affected |
| 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not in release |
| 9.10 karmic | Not in release |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | Not in release |
| qemu-kvm | 11.04 natty | Not affected |
| 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 9.04 jaunty | Not in release |
| 8.10 intrepid | Not in release |
| 8.04 LTS hardy | Not in release |
| 6.06 LTS dapper | 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-2009-3640?format=md#patch-details)

### 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 |
| --- | --- |
| linux | * Upstream:   <http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=88c808fd42b53a7e01a2ac3253ef31fef74cb5af> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3640)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2009-3640)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2009-3640)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2009-3640)

### Other references

* <http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.32-rc1>
* <https://www.cve.org/CVERecord?id=CVE-2009-3640>