CVE-2013-1798 Information

Description

The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations which allows guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a2c118bfab8bc6b8bb213abfc35201e441693d55 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://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.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.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=917017 https://github.com/torvalds/linux/commit/a2c118bfab8bc6b8bb213abfc35201e441693d55