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.Referenceshttp://www.ubuntu.com/usn/USN-2135-1http://lists.opensuse.org/opensuse-updates/2014-02/msg00045.htmlhttp://www.ubuntu.com/usn/USN-2138-1http://www.ubuntu.com/usn/USN-2113-1http://www.ubuntu.com/usn/USN-2141-1http://www.openwall.com/lists/oss-security/2013/12/12/12http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b963a22e6d1a266a67e9eecc88134713fd54775chttp://www.securityfocus.com/bid/64270https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.54http://www.ubuntu.com/usn/USN-2110-1http://www.ubuntu.com/usn/USN-2129-1http://www.ubuntu.com/usn/USN-2136-1http://www.ubuntu.com/usn/USN-2128-1http://www.ubuntu.com/usn/USN-2139-1http://www.ubuntu.com/usn/USN-2117-1http://rhn.redhat.com/errata/RHSA-2013-1801.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=1032207http://www.ubuntu.com/usn/USN-2109-1http://rhn.redhat.com/errata/RHSA-2014-0284.htmlhttp://rhn.redhat.com/errata/RHSA-2014-0163.htmlhttps://github.com/torvalds/linux/commit/b963a22e6d1a266a67e9eecc88134713fd54775chttp://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.htmlhttp://lists.opensuse.org/opensuse-security-announce/2014-02/msg00003.html