Already fixed for RHEL4, but not for RHEL3/2.1-ia64. See bz#205335 for
From Kirill Korotaev:
When running on IA64 or SPARC platforms, local users can cause a denial of
service via a malformed ELF file and then triggered by cross-region mappings.
This issue has been addressed in following products:
Red Hat Linux Enterprise 2.1
Red Hat Linux Enterprise 3
Via RHSA-2007:1049 available at https://rhn.redhat.com/errata/RHSA-2007-1049.html and RHSA-2008:0787 available at https://rhn.redhat.com/errata/RHSA-2008-0787.html