Linux CUPS before 1.1.6 does not securely handle temporary files, possibly due to a symlink vulnerability that could allow local users to overwrite files.
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-048.php3
http://lists2.suse.com/archive/suse-security-announce/2001-Mar/0000.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000386
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000384