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

Ubuntu 10.04 LTS

Summary: Multiple kernel flaws have been fixed.

Software Description: Linux kernel

Details:

Timo Warns discovered that the LDM disk partition handling code did not correctly handle certain values. By inserting a specially crafted disk device, a local attacker could exploit this to gain root privileges. (CVE-2011-1017)

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

Ubuntu 10.04 LTS:   linux-image-2.6.32-33-386       2.6.32-33.70

After a standard system update you need to reboot your computer to make all the necessary changes.