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CVE-2016-2550 (GCVE-0-2016-2550)

Vulnerability from cvelistv5 – Published: 2016-04-27 17:00 – Updated: 2024-08-05 23:32
VLAI
Summary
The Linux kernel before 4.5 allows local users to bypass file-descriptor limits and cause a denial of service (memory consumption) by leveraging incorrect tracking of descriptor ownership and sending each descriptor over a UNIX socket before closing it. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-4312.
Severity
5.5 (Medium)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
URL Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1311517 x_refsource_CONFIRM
http://www.oracle.com/technetwork/security-adviso… x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-2949-1 vendor-advisoryx_refsource_UBUNTU
http://www.openwall.com/lists/oss-security/2016/02/23/2 mailing-listx_refsource_MLIST
http://www.debian.org/security/2016/dsa-3503 vendor-advisoryx_refsource_DEBIAN
http://git.kernel.org/cgit/linux/kernel/git/torva… x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-2947-3 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2947-2 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2947-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2946-2 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2948-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2946-1 vendor-advisoryx_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2948-2 vendor-advisoryx_refsource_UBUNTU
https://github.com/torvalds/linux/commit/415e3d3e… x_refsource_CONFIRM
Date Public
2016-02-23 00:00
Show details on NVD website
To clipboard 

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              "value": "CWE-399"
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          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
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            "value": "El kernel de Linux en versiones anteriores a 4.5 permite a usuarios locales eludir los l\u00edmites del archivo descriptor y causar una denegaci\u00f3n de servicio (consumo de memoria) mediante el aprovechamiento del incorrecto seguimiento de la propiedad del descriptor y enviando cada descriptor a trav\u00e9s de un socket UNIX antes de cerrarlo. NOTA: esta vulnerabilidad existe debido a una soluci\u00f3n incorrecta para CVE-2013-4312."
          }
        ],
        "id": "CVE-2016-2550",
        "lastModified": "2026-05-06T22:30:45.220",
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              "baseSeverity": "MEDIUM",
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                "authentication": "NONE",
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                "baseScore": 4.9,
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                "integrityImpact": "NONE",
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              "exploitabilityScore": 3.9,
              "impactScore": 6.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
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              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
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          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
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                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2016-04-27T17:59:19.977",
        "references": [
          {
            "source": "security@debian.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=415e3d3e90ce9e18727e8843ae343eda5a58fad6"
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            "url": "http://www.openwall.com/lists/oss-security/2016/02/23/2"
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          {
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                "value": "CWE-399"
              }
            ],
            "source": "nvd@nist.gov",
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        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T12:05:50+00:00",
      "cve": "CVE-2016-2550",
      "id": "CVE-2016-2550",
      "initial_release_date": "2016-02-22T00:00:00+00:00",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "54",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: incorrectly accounted in-flight fds",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-2550.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-31T01:49:25Z",
      "cve": "CVE-2016-2550",
      "id": "CVE-2016-2550",
      "initial_release_date": "2023-02-15T05:05:42Z",
      "product_status:known_not_affected": "49",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-2550",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-2550.json",
      "version": "8"
    }
  }
}



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Tags
Taxonomy of the tags.





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

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.