CentOS Errata and Security Advisory 2005:474
https://rhn.redhat.com/errata/RHSA-2005-474.html
The following updated files have been uploaded and are currently syncing to the mirrors:
i386: bzip2-1.0.2-13.EL4.2.i386.rpm bzip2-devel-1.0.2-13.EL4.2.i386.rpm bzip2-libs-1.0.2-13.EL4.2.i386.rpm
src: bzip2-1.0.2-13.EL4.2.src.rpm