Mandriva Linux Security Advisory – A buffer overflow in the giftopnm utility in netpbm prior to version 10.27 could allow attackers to have an unknown impact via a specially crafted GIF file.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/63388/MDVSA-2008-039.txt
Source: https://packetstormsecurity.com/files/63388/Mandriva-Linux-Security-Advisory-2008-039.html