Race condition in arch/x86/mm/tlb.c in the Linux kernel before 4.4.1 allows local users to gain privileges by triggering access to a paging structure by a different CPU.
https://github.com/torvalds/linux/commit/71b3c126e61177eb693423f2e18a1914205b165e
https://bugzilla.redhat.com/show_bug.cgi?id=1301893
http://www.ubuntu.com/usn/USN-2998-1
http://www.ubuntu.com/usn/USN-2989-1
http://www.ubuntu.com/usn/USN-2967-2
http://www.ubuntu.com/usn/USN-2967-1
http://www.ubuntu.com/usn/USN-2932-1
http://www.ubuntu.com/usn/USN-2931-1
http://www.securityfocus.com/bid/81809
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.openwall.com/lists/oss-security/2016/01/25/1
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.1
http://www.debian.org/security/2016/dsa-3503
http://rhn.redhat.com/errata/RHSA-2017-0817.html
http://rhn.redhat.com/errata/RHSA-2016-2584.html
http://rhn.redhat.com/errata/RHSA-2016-2574.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html