Untrusted search path vulnerability in Perl before 5.8.7-r1 on Gentoo Linux allows local users in the portage group to gain privileges via a malicious shared object in the Portage temporary build directory, which is part of the RUNPATH.
http://www.vupen.com/english/advisories/2005/2119
http://www.securityfocus.com/bid/15120
http://www.gentoo.org/security/en/glsa/glsa-200510-14.xml