The vivid_fb_ioctl function in drivers/media/platform/vivid/vivid-osd.c in the Linux kernel through 4.3.3 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel memory via a crafted application.
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=eda98796aff0d9bf41094b06811f5def3b4c333c
lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html
www.openwall.com/lists/oss-security/2015/10/21/8
www.securityfocus.com/bid/77317
www.securitytracker.com/id/1034893
www.ubuntu.com/usn/USN-2842-1
www.ubuntu.com/usn/USN-2842-2
www.ubuntu.com/usn/USN-2843-1
www.ubuntu.com/usn/USN-2843-2
www.ubuntu.com/usn/USN-2843-3
bugzilla.redhat.com/show_bug.cgi?id=1274726
github.com/torvalds/linux/commit/eda98796aff0d9bf41094b06811f5def3b4c333c