i2myspell in myspell 3.1 allows local users to overwrite arbitrary files via a symlink attack on (1) /tmp/i2my#####.1 and (2) /tmp/i2my#####.2 temporary files.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44830
https://bugs.gentoo.org/show_bug.cgi?id=235770
http://www.securityfocus.com/bid/30929
http://www.openwall.com/lists/oss-security/2008/10/30/2