{
  "threat_severity" : "Moderate",
  "public_date" : "2009-11-24T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: KVM: x86 emulator: limit instructions to 15 bytes",
    "id" : "541160",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=541160"
  },
  "cvss" : {
    "cvss_base_score" : "2.1",
    "cvss_scoring_vector" : "AV:L/AC:L/Au:N/C:N/I:N/A:P",
    "status" : "verified"
  },
  "details" : [ "The do_insn_fetch function in arch/x86/kvm/emulate.c in the x86 emulator in the KVM subsystem in the Linux kernel before 2.6.32-rc8-next-20091125 tries to interpret instructions that contain too many bytes to be valid, which allows guest OS users to cause a denial of service (increased scheduling latency) on the host OS via unspecified manipulations related to SMP support." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2009-12-09T00:00:00Z",
    "advisory" : "RHSA-2009:1659",
    "cpe" : "cpe:/a:redhat:rhel_virtualization:5",
    "package" : "kvm-0:83-105.el5_4.13"
  }, {
    "product_name" : "Red Hat Enterprise Virtualization for RHEL-5",
    "release_date" : "2009-12-23T00:00:00Z",
    "advisory" : "RHSA-2009:1692",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5::hypervisor",
    "package" : "rhev-hypervisor-0:5.4-2.1.3.el5_4rhev2_1"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2009-4031\nhttps://nvd.nist.gov/vuln/detail/CVE-2009-4031" ],
  "name" : "CVE-2009-4031",
  "csaw" : false
}