KDE Security Advisory: kpdf, the KDE pdf viewer, shares code with xpdf. xpdf contains a buffer overflow that can be triggered by a specially crafted PDF file.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/35507/advisory-20041223-1.txt
Source: https://packetstormsecurity.com/files/35507/KDE-Security-Advisory-2004-12-23.1.html