The ptrace system call in IBM AIX 5.3, 6.1, and 7.1, and VIOS 2.2.x, allows local users to cause a denial of service (system crash) or obtain sensitive information from kernel memory via a crafted PT_LDINFO operation.
https://exchange.xforce.ibmcloud.com/vulnerabilities/92262
http://www.ibm.com/support/docview.wss?uid=isg1IV59675
http://www.ibm.com/support/docview.wss?uid=isg1IV59045
http://www.ibm.com/support/docview.wss?uid=isg1IV58948
http://www.ibm.com/support/docview.wss?uid=isg1IV58888
http://www.ibm.com/support/docview.wss?uid=isg1IV58861
http://www.ibm.com/support/docview.wss?uid=isg1IV58840
http://www.ibm.com/support/docview.wss?uid=isg1IV58766
http://archives.neohapsis.com/archives/bugtraq/2014-05/0031.html
http://aix.software.ibm.com/aix/efixes/security/ptrace_advisory.asc