The following errata for CentOS-2 have been built and uploaded to the centos mirror:

RHSA-2005:810-01 Important: gdk-pixbuf security update

Files available:
gdk-pixbuf-0.22.0-12.el2.3.i386.rpm
gdk-pixbuf-devel-0.22.0-12.el2.3.i386.rpm
gdk-pixbuf-gnome-0.22.0-12.el2.3.i386.rpm

More details are available from the RedHat web site at
https://rhn.redhat.com/errata/rh21as-errata.html

The easy way to make sure you are up to date with all the latest patches is to run:
# yum update