librdmacm 1.0.16, when ibacm.port is not specified, connects to port 6125, which allows remote attackers to specify the address resolution information for the application via a malicious ib_acm service.
https://bugzilla.redhat.com/show_bug.cgi?id=865483
http://www.securityfocus.com/bid/55896
http://www.openwall.com/lists/oss-security/2012/10/11/9