PRIOn knowledge basePRION:CVE-2013-6400Code injection
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.
References
lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html
lists.xen.org/archives/html/xen-announce/2013-12/msg00002.html
secunia.com/advisories/55932
security.gentoo.org/glsa/glsa-201407-03.xml
www.openwall.com/lists/oss-security/2013/12/10/7
www.securitytracker.com/id/1029468
lists.fedoraproject.org/pipermail/package-announce/2013-December/125081.html
lists.fedoraproject.org/pipermail/package-announce/2013-December/125111.html
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