=========================================================================Ubuntu Security Notice USN-1234-1
October 20, 2011

acpid vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS

Summary:

acpid could be made to stall under certain conditions.

Software Description:
- acpid: Advanced Configuration and Power Interface event daemon

Details:

Vasiliy Kulikov discovered that acpid did not properly handle connections
from poorly behaving clients. A local attacker could potentially exploit
this to cause a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.04:
  acpid                           1:2.0.7-1ubuntu2.1

Ubuntu 10.10:
  acpid                           1.0.10-5ubuntu4.1

Ubuntu 10.04 LTS:
  acpid                           1.0.10-5ubuntu2.2

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-1234-1
  CVE-2011-1159

Package Information:
  https://launchpad.net/ubuntu/+source/acpid/1:2.0.7-1ubuntu2.1
  https://launchpad.net/ubuntu/+source/acpid/1.0.10-5ubuntu4.1
  https://launchpad.net/ubuntu/+source/acpid/1.0.10-5ubuntu2.2