The apic_get_tmcct function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via crafted modifications of the TMICT value.
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b963a22e6d1a266a67e9eecc88134713fd54775c
lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html
lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html
lists.opensuse.org/opensuse-updates/2014-02/msg00045.html
rhn.redhat.com/errata/RHSA-2013-1801.html
rhn.redhat.com/errata/RHSA-2014-0163.html
rhn.redhat.com/errata/RHSA-2014-0284.html
www.openwall.com/lists/oss-security/2013/12/12/12
www.securityfocus.com/bid/64270
www.ubuntu.com/usn/USN-2109-1
www.ubuntu.com/usn/USN-2110-1
www.ubuntu.com/usn/USN-2113-1
www.ubuntu.com/usn/USN-2117-1
www.ubuntu.com/usn/USN-2128-1
www.ubuntu.com/usn/USN-2129-1
www.ubuntu.com/usn/USN-2135-1
www.ubuntu.com/usn/USN-2136-1
www.ubuntu.com/usn/USN-2138-1
www.ubuntu.com/usn/USN-2139-1
www.ubuntu.com/usn/USN-2141-1
bugzilla.redhat.com/show_bug.cgi?id=1032207
github.com/torvalds/linux/commit/b963a22e6d1a266a67e9eecc88134713fd54775c
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.54