The latest Red Hat Bug Fix Advisory (RHAB) informs users of the Red Hat Enterprise Linux Server (RHEL) 5.x and Red Hat Enterprise Linux Desktop 5.x operating system about a new kernel update that fixes multiple vulnerabilities.
Links:
[1] http://www.tuxmachines.org/taxonomy/term/142
[2] http://news.softpedia.com/news/red-hat-enterprise-linux-5-and-centos-5-receive-an-important-kernel-update-496257.shtml