Maped in LuxMan 0.41 uses the user-provided search path to find and execute the gzip program, which allows local users to modify /dev/mem and gain privileges via a modified PATH environment variable that points to a Trojan horse gzip program.
http://www.securityfocus.com/bid/6113
http://www.iss.net/security_center/static/10549.php
http://www.debian.org/security/2002/dsa-189
http://marc.info/?l=bugtraq&m=103660334009855&w=2
http://archives.neohapsis.com/archives/vulnwatch/2002-q4/0062.html