FKIE_CVE-2015-4176

Vulnerability from fkie_nvd - Published: 2016-05-02 10:59 - Updated: 2026-06-17 00:26
Severity
5.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
fs/namespace.c in the Linux kernel before 4.0.2 does not properly support mount connectivity, which allows local users to read arbitrary files by leveraging user-namespace root access for deletion of a file or directory.
References
secalert@redhat.comhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e0c9c0afd2fc958ffa34b697972721d81df8a56fVendor Advisory
secalert@redhat.comhttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2015/06/04/5
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1249442
secalert@redhat.comhttps://github.com/torvalds/linux/commit/e0c9c0afd2fc958ffa34b697972721d81df8a56fVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e0c9c0afd2fc958ffa34b697972721d81df8a56fVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2015/06/04/5
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1249442
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/e0c9c0afd2fc958ffa34b697972721d81df8a56fVendor Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D460F925-66B4-4BED-BD3B-91A8C60B8AC4",
              "versionEndIncluding": "4.0.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "fs/namespace.c in the Linux kernel before 4.0.2 does not properly support mount connectivity, which allows local users to read arbitrary files by leveraging user-namespace root access for deletion of a file or directory."
    },
    {
      "lang": "es",
      "value": "fs/namespace.c en el kernel de Linux en versiones anteriores a 4.0.2 no soporta correctamente conectividad de montaje, lo que permite a usuarios locales leer archivos arbitrarios aprovechando acceso root al espacio de nombres de usuario para eliminar un archivo o directorio."
    }
  ],
  "id": "CVE-2015-4176",
  "lastModified": "2026-06-17T00:26:52.043",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2016-05-02T10:59:13.843",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e0c9c0afd2fc958ffa34b697972721d81df8a56f"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.openwall.com/lists/oss-security/2015/06/04/5"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1249442"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/torvalds/linux/commit/e0c9c0afd2fc958ffa34b697972721d81df8a56f"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e0c9c0afd2fc958ffa34b697972721d81df8a56f"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2015/06/04/5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1249442"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/torvalds/linux/commit/e0c9c0afd2fc958ffa34b697972721d81df8a56f"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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