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CVE-2022-37394

Estado: ModificadaBaja (3.3)—

An issue was discovered in OpenStack Nova before 23.2.2, 24.x before 24.1.2, and 25.x before 25.0.2. By creating a neutron port with the direct vnic_type, creating an instance bound to that port, and then changing the vnic_type of the bound port to macvtap, an authenticated user may cause the compute service to fail to restart, resulting in a possible denial of service. Only Nova deployments configured with SR-IOV are affected.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Openstack — Nova

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-37394",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.3,
          "attackVector": "LOCAL",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
            }
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        }
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  ],
  "published": "2022-08-03T07:15:07.757",
  "references": [
    {
      "url": "https://bugs.launchpad.net/ossa/+bug/1981813",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://review.opendev.org/c/openstack/nova/+/849985",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://review.opendev.org/c/openstack/nova/+/850003",
      "tags": [
        "Third Party Advisory"
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugs.launchpad.net/ossa/+bug/1981813",
      "tags": [
        "Exploit",
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    },
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      "url": "https://review.opendev.org/c/openstack/nova/+/849985",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://review.opendev.org/c/openstack/nova/+/850003",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in OpenStack Nova before 23.2.2, 24.x before 24.1.2, and 25.x before 25.0.2. By creating a neutron port with the direct vnic_type, creating an instance bound to that port, and then changing the vnic_type of the bound port to macvtap, an authenticated user may cause the compute service to fail to restart, resulting in a possible denial of service. Only Nova deployments configured with SR-IOV are affected."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en OpenStack Nova versiones anteriores a 23.2.2, 24.x anteriores a 24.1.2 y 25.x anteriores a 25.0.2. Al crear un puerto de neutrones con el vnic_type directo, crear una instancia vinculada a ese puerto y luego cambiar el vnic_type del puerto vinculado a macvtap, un usuario autenticado puede causar que el servicio de computación no sea reiniciado, resultando en una posible denegación de servicio. Sólo están afectadas las implantaciones de Nova configuradas con SR-IOV"
    }
  ],
  "lastModified": "2026-06-17T04:55:01.317",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "3C3E7C95-0C37-49D2-9FEC-ADC348D86275",
              "versionEndExcluding": "23.2.2"
            },
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              "vulnerable": true,
              "matchCriteriaId": "DDEDE391-A318-42E9-BE11-7E4CE993D9C6",
              "versionEndExcluding": "24.1.2",
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              "versionEndExcluding": "25.0.2",
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}