CVE-2013-6400 Information

Description

Xen 4.2.x and 4.3.x when using Intel VT-d and a PCI device has been assigned does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur which causes the TLB entries to not be flushed and allows local guest administrators to cause a denial of service (host crash) or gain privileges via unspecified vectors.

Reference

http://lists.fedoraproject.org/pipermail/package-announce/2013-December/125081.html http://lists.fedoraproject.org/pipermail/package-announce/2013-December/125111.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html http://lists.xen.org/archives/html/xen-announce/2013-12/msg00002.html http://secunia.com/advisories/55932 http://security.gentoo.org/glsa/glsa-201407-03.xml http://www.openwall.com/lists/oss-security/2013/12/10/7 http://www.securitytracker.com/id/1029468