Unspecified vulnerability in the MySQL Server component in Oracle MySQL 5.1.70 and earlier, 5.5.32 and earlier, and 5.6.12 and earlier allows remote authenticated users to affect availability via unknown vectors related to Optimizer.
http://www.ubuntu.com/usn/USN-2006-1
http://www.securityfocus.com/bid/63109
http://www.oracle.com/technetwork/topics/security/cpuoct2013-1899837.html
http://www.debian.org/security/2013/dsa-2818
http://www.debian.org/security/2013/dsa-2780
http://security.gentoo.org/glsa/glsa-201409-04.xml
http://secunia.com/advisories/55291
http://rhn.redhat.com/errata/RHSA-2014-0189.html