Unspecified vulnerability in the Portable Clusterware component in Oracle Database Server 11.2.0.4 and 12.1.0.2 allows remote attackers to affect availability via unknown vectors.
http://www.securitytracker.com/id/1036363
http://www.securityfocus.com/bid/91898
http://www.securityfocus.com/bid/91787
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html