A use-after-free vulnerability causing memory corruption was found in kernel. Reproducer with report can be found here: https://groups.google.com/forum/#!topic/syzkaller/3twDUI4Cpm8 Patch can be found here: http://article.gmane.org/gmane.linux.kernel/2057498
The patches don't compile and there's still on-going discussion on the correct solution. I believe we're waiting for Jason to send a v5 of the series.