This patch was to address a root exploit on the new RH5 Kernel 2.6.17 - 2.6.24.1. More information here:
http://www.securityfocus.com/bid/27704/info
There were 2 servers that is running this kernel but has not been compromised:
cwh5
cpres3
We did an emergency patch on these servers this morning which took less than 30 mins. cpres3 had a little problem coming back up but it was resolved after a fsck was performed.
Many hosting companies have already reported being hacked which affected service to many customers. We seem to have adverted what could have been a very, very bad day!
Tony