Recently a severe vulnerability in the Linux kernel was publicly disclosed and patched. In this post we'll analyze what this particular security vulnerability looks like in the Linux kernel code and walk you through the publicly published proof-of-concept exploit code by Matthew Daley released May 12th 2014.
more here.........http://blog.includesecurity.com/2014/06/exploit-walkthrough-cve-2014-0196-pty-kernel-race-condition.html