The ps2epsi extension shell script (ps2epsi.sh) in Inkscape before 0.41 allows local users to overwrite arbitrary files via a symlink attack on the tmpepsifile.epsi temporary file.
http://www.securityfocus.com/bid/14522
http://www.debian.org/security/2005/dsa-916
http://secunia.com/advisories/17886
http://secunia.com/advisories/17882