Ubuntu Security Notice USN-1234-1
20th October, 2011
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
acpid could be made to stall under certain conditions.
- acpid - Advanced Configuration and Power Interface event daemon
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.
The problem can be corrected by updating your system to the following package version:
- 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
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.