The kernel in IBM AIX 5.3, 6.1, and 7.1, and VIOS 2.2.1.4-FP-25 SP-02, does not properly implement the dupmsg system call, which allows local users to cause a denial of service (system crash) via a crafted application.
https://exchange.xforce.ibmcloud.com/vulnerabilities/74134
http://www.securitytracker.com/id?1027315
http://www.ibm.com/support/docview.wss?uid=isg1IV22697
http://www.ibm.com/support/docview.wss?uid=isg1IV22696
http://www.ibm.com/support/docview.wss?uid=isg1IV22695
http://www.ibm.com/support/docview.wss?uid=isg1IV22694
http://www.ibm.com/support/docview.wss?uid=isg1IV22693
http://aix.software.ibm.com/aix/efixes/security/syscall_advisory.asc