arch/x86/kvm/vmx.c in the Linux kernel through 4.9 mismanages the #BP and #OF exceptions, which allows guest OS users to cause a denial of service (guest OS crash) by declining to handle an exception thrown by an L2 guest.
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ef85b67385436ddc1998f45f1d6a210f935b3388
www.debian.org/security/2017/dsa-3804
www.openwall.com/lists/oss-security/2016/12/15/3
www.securityfocus.com/bid/94933
access.redhat.com/errata/RHSA-2017:1842
access.redhat.com/errata/RHSA-2017:2077
bugzilla.redhat.com/show_bug.cgi?id=1404924
github.com/torvalds/linux/commit/ef85b67385436ddc1998f45f1d6a210f935b3388
usn.ubuntu.com/3822-1/
usn.ubuntu.com/3822-2/