Referenced CVEs: 
CVE-2006-5214
Description: 
=========================================================== Ubuntu Security Notice USN-364-1 October 16, 2006 xinit vulnerability CVE-2006-5214 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.10 Ubuntu 6.06 LTS This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 5.10: xinit 1.0+0.99.1-4ubuntu0.1 Ubuntu 6.06 LTS: xinit 1.0.1-0ubuntu3.1 After a standard system upgrade you need to restart your session to effect the necessary changes. Details follow: A race condition existed that would allow other local users to see error messages generated during another user's X session. This could allow potentially sensitive information to be leaked.