Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
A zlib bug that may have security implications on some platforms has been fixed. MIT-SHM has been updated to not access SHM segments that the client doesn't have sufficient privileges to access. An Xlib problem that made it possible to load (and executure) arbitrary code in privileged clients has been fixed. This release is available only in the form of a patch to version 4.2.0.