{
  "id": "CVE-2009-4031",
  "sourceIdentifier": "secalert@redhat.com",
  "published": "2009-11-29T13:07:32.250",
  "lastModified": "2023-02-13T02:20:41.667",
  "vulnStatus": "Modified",
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n do_insn_fetch en arch/x86/kvm/emulate.c en el emulador x86 KVM en el subsystem del kernel de Linux anterior a 2.6.32-rc8-next-20091125 intenta interpretar instrucciones que contienen demasiados bytes para ser v\u00e1lidas, lo que permite a un usuario invitado del sistema operativo provocar una denegaci\u00f3n de servicio (incremento de la latencia de la planificaci\u00f3n) en el sistema operativo anfitri\u00f3n a trav\u00e9s de manipulaciones no especificadas relacionadas con el soporte SMP."
    }
  ],
  "metrics": {
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.8
        },
        "baseSeverity": "HIGH",
        "exploitabilityScore": 10.0,
        "impactScore": 6.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
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  "references": [
    {
      "url": "http://git.kernel.org/?p=linux/kernel/git/avi/kvm.git%3Ba=commit%3Bh=e42d9b8141d1f54ff72ad3850bb110c95a5f3b88",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00006.html",
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.32-rc8-next-20091125.gz",
      "source": "secalert@redhat.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2009/11/25/1",
      "source": "secalert@redhat.com",
      "tags": [
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      "url": "http://www.securityfocus.com/bid/37130",
      "source": "secalert@redhat.com",
      "tags": [
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=541160",
      "source": "secalert@redhat.com",
      "tags": [
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        "Third Party Advisory"
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    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11089",
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
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    },
    {
      "url": "https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00777.html",
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}