{
  "threat_severity" : "Low",
  "public_date" : "2014-11-18T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: xen: Insufficient restrictions on certain MMU update hypercalls (xsa109)",
    "id" : "1160664",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1160664"
  },
  "cvss" : {
    "cvss_base_score" : "4.3",
    "cvss_scoring_vector" : "AV:A/AC:H/Au:S/C:N/I:N/A:C",
    "status" : "draft"
  },
  "details" : [ "The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP)." ],
  "statement" : "Not vulnerable.\nThis issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.",
  "acknowledgement" : "Red Hat would like to thank Xen 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-2014-8594\nhttps://nvd.nist.gov/vuln/detail/CVE-2014-8594\nhttp://xenbits.xen.org/xsa/advisory-109.html" ],
  "name" : "CVE-2014-8594",
  "csaw" : false
}