Array index error in the aio_read_events_ring function in fs/aio.c in the Linux kernel through 3.15.1 allows local users to obtain sensitive information from kernel memory via a large head value.
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.3
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.10
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.24
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.46
https://source.android.com/security/bulletin/2017-04-01
https://github.com/torvalds/linux/commit/edfbbf388f293d70bf4b7c0bc38774d05e6f711a
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=edfbbf388f29
https://bugzilla.redhat.com/show_bug.cgi?id=1094602
http://www.securitytracker.com/id/1038201
http://www.securitytracker.com/id/1030479
http://www.securityfocus.com/bid/68176