The PerlIO package for Perl 5.8.0 suffers from a flaw where PERLIO_DEBUG is susceptible to a buffer overflow that allows for local root compromise when using setuid perl.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/36091/DMA-2005-0131b.txt
Source: https://packetstormsecurity.com/files/36091/DMA-2005-0131b.txt.html