faxspool in mgetty 1.1.36 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/faxsp.##### temporary file.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44833
https://bugs.gentoo.org/show_bug.cgi?id=235806
https://bugs.gentoo.org/show_bug.cgi?id=235770
http://www.securityfocus.com/bid/30927
http://www.openwall.com/lists/oss-security/2008/10/30/2
http://uvw.ru/report.lenny.txt
http://security.gentoo.org/glsa/glsa-200812-08.xml