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FKIE_CVE-2016-7422

Vulnerability from fkie_nvd - Published: 2016-12-10 00:59 - Updated: 2026-06-17 00:53
Summary
The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via a large I/O descriptor buffer length value.
References
secalert@redhat.comhttp://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=973e7170dddefb491a48df5cba33b2ae151013a0
secalert@redhat.comhttp://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlMailing List, Third Party Advisory
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2016/09/16/10Mailing List, Third Party Advisory
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2016/09/16/4Mailing List, Third Party Advisory
secalert@redhat.comhttp://www.securityfocus.com/bid/92996Third Party Advisory, VDB Entry
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2392Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2408Third Party Advisory
secalert@redhat.comhttps://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03546.htmlPatch, Third Party Advisory
secalert@redhat.comhttps://security.gentoo.org/glsa/201609-01Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=973e7170dddefb491a48df5cba33b2ae151013a0
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/09/16/10Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/09/16/4Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/92996Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2392Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2408Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03546.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201609-01Third Party Advisory

{
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    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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        }
      ],
      "source": "secalert@redhat.com"
    }
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via a large I/O descriptor buffer length value."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n virtqueue_map_desc en hw/virtio/virtio.c en QEMU (tambi\u00e9n conocido como Quick Emulator) permite a administradores locales del SO invitado provocar una denegaci\u00f3n de servicio (referencia a puntero NULL y ca\u00edda del proceso QEMU) a trav\u00e9s de un gran valor de longitud de b\u00fafer descriptor de I/O."
    }
  ],
  "id": "CVE-2016-7422",
  "lastModified": "2026-06-17T00:53:02.287",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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    "cvssMetricV31": [
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.0,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.5,
        "impactScore": 4.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2016-12-10T00:59:18.687",
  "references": [
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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