[Precise CVE-2013-0871] race conditon in ptrace

Luis Henriques luis.henriques at canonical.com
Mon Feb 18 16:08:29 UTC 2013

>From the description:

 "A race conditon in ptrace can lead to kernel stack corruption and
  arbitrary kernel-mode code execution."

I was able to reproduce this issue running Precise on KVM, with 4 CPUs.

Following this email, there are 3 patches that should fix this issue for
Precise.  These patches have been prepared by Brad and I couldn't reproduce
the bug using these patches.

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