FKIE_CVE-2007-3722

Vulnerability from fkie_nvd - Published: 2007-07-12 16:30 - Updated: 2026-06-16 22:42
Severity
Summary
The 4BSD process scheduler in the FreeBSD kernel performs scheduling based on CPU billing gathered from periodic process sampling ticks, which allows local users to cause a denial of service (CPU consumption) by performing voluntary nanosecond sleeps that result in the process not being active during a clock interrupt, as described in "Secretly Monopolizing the CPU Without Superuser Privileges."
References
cve@mitre.orghttp://osvdb.org/39599
cve@mitre.orghttp://www.cs.huji.ac.il/~dants/papers/Cheat07Security.pdf
af854a3a-2127-422b-91ae-364da2661108http://osvdb.org/39599
af854a3a-2127-422b-91ae-364da2661108http://www.cs.huji.ac.il/~dants/papers/Cheat07Security.pdf
Impacted products
Vendor Product Version
freebsd freebsd *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D9EC02F3-3905-460D-8949-3B26394215CA",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The 4BSD process scheduler in the FreeBSD kernel performs scheduling based on CPU billing gathered from periodic process sampling ticks, which allows local users to cause a denial of service (CPU consumption) by performing voluntary nanosecond sleeps that result in the process not being active during a clock interrupt, as described in \"Secretly Monopolizing the CPU Without Superuser Privileges.\""
    },
    {
      "lang": "es",
      "value": "El programador de procesos 4BSD en el n\u00facleo de FreeBSD realiza la programaci\u00f3n bas\u00e1ndose en \"facturaci\u00f3n\" (billing) de CPU recogida de muestreo de proceso peri\u00f3dico, lo cual permite a usuarios locales provocar una denegaci\u00f3n de servicio (agotamiento de CPU) realizando esperas voluntarias de nanosegundos que provocan que el proceso no est\u00e9 activo durante una interrupci\u00f3n de reloj, como se ha descrito en \"Monopolizando Secretamente la CPU sin Privilegios de Superusuario\" (Secretly Monopolizing the CPU Without Superuser Privileges)."
    }
  ],
  "id": "CVE-2007-3722",
  "lastModified": "2026-06-16T22:42:35.777",
  "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
      }
    ]
  },
  "published": "2007-07-12T16:30:00.000",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://osvdb.org/39599"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.cs.huji.ac.il/~dants/papers/Cheat07Security.pdf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://osvdb.org/39599"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.cs.huji.ac.il/~dants/papers/Cheat07Security.pdf"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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