CAN-2005-1761 ptrace crasher HP reported via Intel a way that on ia64 a local user could write to the pl field via ptrace and therefore read/write kernel memory.
(Out of embargo)
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-2005-551.html