---
title: "CVE-2011-2527\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-2011-2527?format=md
keywords: index, follow
---

# CVE-2011-2527

Publication date 26 July 2011

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

The change\_process\_uid function in os-posix.c in Qemu 0.14.0 and earlier
does not properly drop group privileges when the -runas option is used,
which allows local guest users to access restricted files on the host.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2011-2527?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| qemu-kvm | 11.04 natty | Fixed 0.14.0+noroms-0ubuntu4.4 |
| 10.10 maverick | Fixed 0.12.5+noroms-0ubuntu7.10 |
| 10.04 LTS lucid | Fixed 0.12.3+noroms-0ubuntu9.15 |
| 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-2011-2527?format=md#patch-details)

## Notes

---

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

potential privilege escalation via supplementary groups

### 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 |
| --- | --- |
| qemu-kvm | * Vendor:   <http://www.debian.org/security/2011/dsa-2282> |

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2527)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-2527)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-2527)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-2527)

### Related Ubuntu Security Notices (USN)

+ [USN-1177-1](https://usn.ubuntu.com/USN-1177-1)
+ QEMU vulnerability
+ 27 July 2011

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2011-2527>