From MOKB-07-11-2006: http://projects.info-pull.com/mokb/MOKB-07-11-2006.html Linux 2.6.x zlib_inflate function can be abused by filesystems that depend on zlib compression, such as cramfs. A failure to handle crafted data, result of a read operation in a corrupted filesystem stream, may lead to memory corruption. This particular vulnerability requires a filesystem (proof of concept for cramfs provided) to fail validation (ex. no integrity checking) of the binary stream in order to reach execution of zlib_inflate().
committed in stream U5 build 42.31. A test kernel with this patch is available from http://people.redhat.com/~jbaron/rhel4/
committed in stream E5 build 42.0.4
verified with 42.0.6 using fsfuzzer
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2007-0014.html