{
  "modified": "2025-08-09T19:01:28Z",
  "published": "2011-01-25T01:00:01Z",
  "id": "CVE-2010-4255",
  "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.",
  "references": [
    {
      "type": "ADVISORY",
      "url": "http://secunia.com/advisories/42884"
    },
    {
      "type": "ADVISORY",
      "url": "http://secunia.com/advisories/46397"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.vmware.com/security/advisories/VMSA-2011-0012.html"
    },
    {
      "type": "FIX",
      "url": "http://lists.xensource.com/archives/html/xen-devel/2010-11/msg01650.html"
    },
    {
      "type": "FIX",
      "url": "http://openwall.com/lists/oss-security/2010/11/30/5"
    },
    {
      "type": "FIX",
      "url": "http://openwall.com/lists/oss-security/2010/11/30/8"
    },
    {
      "type": "FIX",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=658155"
    },
    {
      "type": "WEB",
      "url": "http://www.redhat.com/support/errata/RHSA-2011-0017.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/archive/1/520102/100/0/threaded"
    }
  ]
}