Unspecified vulnerability in Oracle MySQL Server 5.5.42 and earlier and 5.6.23 and earlier allows remote authenticated users to affect availability via unknown vectors related to Server : Optimizer.
https://security.gentoo.org/glsa/201610-06
http://www.ubuntu.com/usn/USN-2674-1
http://www.securityfocus.com/bid/75759
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
http://www.debian.org/security/2015/dsa-3311
http://rhn.redhat.com/errata/RHSA-2015-1665.html
http://rhn.redhat.com/errata/RHSA-2015-1647.html
http://rhn.redhat.com/errata/RHSA-2015-1646.html
http://rhn.redhat.com/errata/RHSA-2015-1630.html
http://rhn.redhat.com/errata/RHSA-2015-1629.html
http://rhn.redhat.com/errata/RHSA-2015-1628.html
http://lists.opensuse.org/opensuse-updates/2015-09/msg00042.html