CentOS Errata and Security Advisory 2005:743
https://rhn.redhat.com/errata/RHSA-2005-743.html
The following updated files have been uploaded and are currently syncing to the mirrors:
i386: netpbm-10.25-2.EL4.1.i386.rpm netpbm-devel-10.25-2.EL4.1.i386.rpm netpbm-progs-10.25-2.EL4.1.i386.rpm
src: netpbm-10.25-2.EL4.1.src.rpm