{
  "threat_severity" : "Moderate",
  "public_date" : "2010-11-29T00:00:00Z",
  "bugzilla" : {
    "description" : "xen: 64-bit PV xen guest can crash host by accessing hypervisor per-domain memory area",
    "id" : "658155",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=658155"
  },
  "cvss" : {
    "cvss_base_score" : "6.1",
    "cvss_scoring_vector" : "AV:A/AC:L/Au:N/C:N/I:N/A:C",
    "status" : "verified"
  },
  "details" : [ "The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2011-01-13T00:00:00Z",
    "advisory" : "RHSA-2011:0017",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "kernel-0:2.6.18-238.el5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2010-4255\nhttps://nvd.nist.gov/vuln/detail/CVE-2010-4255" ],
  "name" : "CVE-2010-4255",
  "csaw" : false
}