I have been looking at the security advisories provided here:

http://lists.centos.org/pipermail/centos-announce/

It appears that there is not a 1:1 correlation between advisories listed here and advisories listed by Red Hat:

https://rhn.redhat.com/errata

Is there a specific reason for this? Also, is there an alternate location to find all Errata information for CentOS?

Joshua Bahnsen