Denial of Service and Privilege Escalation Vulnerability in Xen 4.2.x and 4.3.x with Intel VT-d and PCI Device Assignment

Denial of Service and Privilege Escalation Vulnerability in Xen 4.2.x and 4.3.x with Intel VT-d and PCI Device Assignment

CVE-2013-6400 · MEDIUM Severity

AV:A/AC:H/AU:N/C:C/I:C/A:C

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.

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