Multiple memory leaks in kadmin/server/server_stubs.c in kadmind in MIT Kerberos 5 (aka krb5) before 1.13.4 and 1.14.x before 1.14.1 allow remote authenticated users to cause a denial of service (memory consumption) via a request specifying a NULL principal name.
https://github.com/krb5/krb5/commit/83ed75feba32e46f736fcce0d96a0445f29b96c2
http://www.securitytracker.com/id/1034916
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.debian.org/security/2016/dsa-3466
http://rhn.redhat.com/errata/RHSA-2016-0532.html
http://rhn.redhat.com/errata/RHSA-2016-0493.html
http://lists.opensuse.org/opensuse-updates/2016-02/msg00110.html
http://lists.opensuse.org/opensuse-updates/2016-02/msg00059.html