Unspecified vulnerability in Oracle MySQL 5.6.20 and earlier allows remote authenticated users to affect availability via unknown vectors related to Types.
http://www.ubuntu.com/usn/USN-2781-1
http://www.securitytracker.com/id/1033894
http://www.securityfocus.com/bid/77199
http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html