Ubuntu Update for apt USN-1385-1

Summary
Ubuntu Update for Linux kernel vulnerabilities USN-1385-1
Solution
Please Install the Updated Packages.
Insight
Simon Ruderich discovered that APT incorrectly handled repositories that use InRelease files. The default Ubuntu repositories do not use InRelease files, so this issue only affected third-party repositories. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to install altered packages.
Affected
apt on Ubuntu 11.04