CVE-2014-7842 Information

Description

Race condition in arch/x86/kvm/x86.c in the Linux kernel before 3.17.4 allows guest OS users to cause a denial of service (guest OS crash) via a crafted application that performs an MMIO transaction or a PIO transaction to trigger a guest userspace emulation error report a similar issue to CVE-2010-5313.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a2b9e6c1a35afcc0973acb72e591c714e78885ff http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html http://rhn.redhat.com/errata/RHSA-2016-0855.html http://secunia.com/advisories/62305 http://secunia.com/advisories/62326 http://secunia.com/advisories/62336 http://www.openwall.com/lists/oss-security/2014/11/13/7 http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html http://www.securityfocus.com/bid/71078 https://bugzilla.redhat.com/show_bug.cgi?id=1163762 https://github.com/torvalds/linux/commit/a2b9e6c1a35afcc0973acb72e591c714e78885ff https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.4