Ubuntu Security Notice USN-766-1
27th April, 2009
acpid vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.04
- Ubuntu 8.10
- Ubuntu 8.04 LTS
- Ubuntu 6.06 LTS
Software description
- acpid
Details
It was discovered that acpid did not properly handle a large number of
connections. A local user could exploit this and monopolize CPU resources,
leading to a denial of service.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 9.04:
- acpid 1.0.6-9ubuntu4.9.04.2
- Ubuntu 8.10:
- acpid 1.0.6-9ubuntu4.8.10.2
- Ubuntu 8.04 LTS:
- acpid 1.0.4-5ubuntu9.3
- Ubuntu 6.06 LTS:
- acpid 1.0.4-1ubuntu11.2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.