{
  "threat_severity" : "Important",
  "public_date" : "2013-12-10T00:00:00Z",
  "bugzilla" : {
    "description" : "xen: IOMMU TLB flushing may be inadvertently suppressed",
    "id" : "1035811",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1035811"
  },
  "cvss" : {
    "cvss_base_score" : "6.5",
    "cvss_scoring_vector" : "AV:A/AC:H/Au:S/C:C/I:C/A:C",
    "status" : "draft"
  },
  "details" : [ "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." ],
  "statement" : "Not vulnerable.\nThis issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.\nThis issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2 as we did not have support for Xen hypervisor.",
  "acknowledgement" : "Red Hat would like to thank Xen project for reporting this issue.",
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "kernel-xen",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2013-6400\nhttps://nvd.nist.gov/vuln/detail/CVE-2013-6400" ],
  "name" : "CVE-2013-6400",
  "csaw" : false
}