The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a parenthesized module template expression in the salg_name field, as demonstrated by the vfat(aes) expression, a different vulnerability than CVE-2013-7421.
https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu
https://github.com/torvalds/linux/commit/4943ba16bbc2db05115707b3ff7b4874e9e3c560
https://bugzilla.redhat.com/show_bug.cgi?id=1190546
http://www.ubuntu.com/usn/USN-2546-1
http://www.ubuntu.com/usn/USN-2545-1
http://www.ubuntu.com/usn/USN-2544-1
http://www.ubuntu.com/usn/USN-2543-1
http://www.ubuntu.com/usn/USN-2514-1
http://www.ubuntu.com/usn/USN-2513-1
http://www.securityfocus.com/bid/72320
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.openwall.com/lists/oss-security/2015/01/24/4
http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
http://www.mandriva.com/security/advisories?name=MDVSA-2015:057
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5
http://www.debian.org/security/2015/dsa-3170