CVE-2013-1796 Information

Description

The kvm_set_msr_common function in arch/x86/kvm/x86.c in the Linux kernel through 3.8.4 does not ensure a required time_page alignment during an MSR_KVM_SYSTEM_TIME operation which allows guest OS users to cause a denial of service (buffer overflow and host OS memory corruption) or possibly have unspecified other impact via a crafted application.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c300aa64ddf57d9c5d9c898a64b36877345dd4a9 http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html http://rhn.redhat.com/errata/RHSA-2013-0727.html http://rhn.redhat.com/errata/RHSA-2013-0744.html http://rhn.redhat.com/errata/RHSA-2013-0746.html http://rhn.redhat.com/errata/RHSA-2013-0928.html http://rhn.redhat.com/errata/RHSA-2013-1026.html http://www.mandriva.com/security/advisories?name=MDVSA-2013:176 http://www.openwall.com/lists/oss-security/2013/03/20/9 http://www.securityfocus.com/bid/58607 http://www.ubuntu.com/usn/USN-1805-1 http://www.ubuntu.com/usn/USN-1808-1 http://www.ubuntu.com/usn/USN-1809-1 http://www.ubuntu.com/usn/USN-1812-1 http://www.ubuntu.com/usn/USN-1813-1 https://bugzilla.redhat.com/show_bug.cgi?id=917012 https://github.com/torvalds/linux/commit/c300aa64ddf57d9c5d9c898a64b36877345dd4a9