fkie_cve-2017-17864
Vulnerability from fkie_nvd
Published
2017-12-27 17:08
Modified
2025-04-20 01:37
Summary
kernel/bpf/verifier.c in the Linux kernel through 4.14.8 mishandles states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allows local users to obtain potentially sensitive address information, aka a "pointer leak."
Impacted products
Vendor Product Version
linux linux_kernel *
debian debian_linux 9.0



{
  "configurations": [
    {
      "nodes": [
        {
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4DD5F65B-785C-436C-9177-6C16E228C08D",
              "versionEndIncluding": "4.14.8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "kernel/bpf/verifier.c in the Linux kernel through 4.14.8 mishandles states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allows local users to obtain potentially sensitive address information, aka a \"pointer leak.\""
    },
    {
      "lang": "es",
      "value": "kernel/bpf/verifier.c en el kernel de Linux hasta la versi\u00f3n 4.14.8 gestiona de manera incorrecta las comparaciones states_equal entre el tipo de datos del puntero y el tipo de datos UNKNOWN_VALUE, lo que permite que usuarios locales obtengan informaci\u00f3n de direcciones sensible. Esto tambi\u00e9n se conoce como \"pointer leak\"."
    }
  ],
  "id": "CVE-2017-17864",
  "lastModified": "2025-04-20T01:37:25.860",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/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
      }
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    "cvssMetricV30": [
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-12-27T17:08:20.560",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/102320"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      "url": "http://www.securitytracker.com/id/1040059"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://anonscm.debian.org/cgit/kernel/linux.git/commit/?h=stretch-security\u0026id=ad775f6ff7eebb93eedc2f592bc974260e7757b0"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-verifier-fix-states_equal-comparison-of-pointer-and-unknown.patch?h=stretch-security"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://usn.ubuntu.com/usn/usn-3523-2/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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      ],
      "url": "https://www.debian.org/security/2017/dsa-4073"
    },
    {
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      "tags": [
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        "VDB Entry"
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      "url": "http://www.securityfocus.com/bid/102320"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "VDB Entry"
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      "url": "http://www.securitytracker.com/id/1040059"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "url": "https://anonscm.debian.org/cgit/kernel/linux.git/commit/?h=stretch-security\u0026id=ad775f6ff7eebb93eedc2f592bc974260e7757b0"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-verifier-fix-states_equal-comparison-of-pointer-and-unknown.patch?h=stretch-security"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://usn.ubuntu.com/usn/usn-3523-2/"
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      "tags": [
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      ],
      "url": "https://www.debian.org/security/2017/dsa-4073"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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