linux-patch-openswan 2.4.12 allows local users to overwrite arbitrary files via a symlink attack on (a) /tmp/snap##### and (b) /tmp/nightly##### temporary files, related to the (1) maysnap and (2) maytest scripts.
https://exchange.xforce.ibmcloud.com/vulnerabilities/44823
https://bugs.gentoo.org/show_bug.cgi?id=235770
http://www.securityfocus.com/bid/30918
http://www.openwall.com/lists/oss-security/2008/10/30/2