FKIE_CVE-2021-47518

Vulnerability from fkie_nvd - Published: 2024-05-24 15:15 - Updated: 2026-06-17 04:17
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done The done() netlink callback nfc_genl_dump_ses_done() should check if received argument is non-NULL, because its allocation could fail earlier in dumpit() (nfc_genl_dump_ses()).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b861a40325eac9c4c13b6c53874ad90617e944dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/48fcd08fdbe05e35b650a252ec2a2d96057a1c7aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4cd8371a234d051f9c9557fcbb1f8c523b1c0d10Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/69bb79a8f5bb9f436b6f1434ca9742591b7bbe18Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/811a7576747760bcaf60502f096d1e6e91d566faPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/83ea620a1be840bf05089a5061fb8323ca42f38cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87cdb8789c38e44ae5454aafe277997c950d00edPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fae9705d281091254d4a81fa2da9d22346097dcaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3b861a40325eac9c4c13b6c53874ad90617e944dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/48fcd08fdbe05e35b650a252ec2a2d96057a1c7aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4cd8371a234d051f9c9557fcbb1f8c523b1c0d10Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/69bb79a8f5bb9f436b6f1434ca9742591b7bbe18Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/811a7576747760bcaf60502f096d1e6e91d566faPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/83ea620a1be840bf05089a5061fb8323ca42f38cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/87cdb8789c38e44ae5454aafe277997c950d00edPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fae9705d281091254d4a81fa2da9d22346097dcaPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/nfc/netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95",
              "versionType": "git"
            },
            {
              "lessThan": "3b861a40325eac9c4c13b6c53874ad90617e944d",
              "status": "affected",
              "version": "ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95",
              "versionType": "git"
            },
            {
              "lessThan": "48fcd08fdbe05e35b650a252ec2a2d96057a1c7a",
              "status": "affected",
              "version": "ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95",
              "versionType": "git"
            },
            {
              "lessThan": "83ea620a1be840bf05089a5061fb8323ca42f38c",
              "status": "affected",
              "version": "ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95",
              "versionType": "git"
            },
            {
              "lessThan": "fae9705d281091254d4a81fa2da9d22346097dca",
              "status": "affected",
              "version": "ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "ac22ac466a659f1b2e02a2e2ee23fc5c42da2c95",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/nfc/netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.12"
            },
            {
              "lessThan": "3.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.295",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.293",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.85",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "vulnerable": true
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            {
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            {
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            {
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              "matchCriteriaId": "B1DD3148-41FC-42AC-96A5-F63D774A97A3",
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            {
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              "matchCriteriaId": "D9668578-08F7-4694-A86F-FCE448387A79",
              "versionEndExcluding": "5.10.85",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6664ACE2-F748-4AE5-B98B-58803B0B2C3E",
              "versionEndExcluding": "5.15.8",
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: fix potential NULL pointer deref in nfc_genl_dump_ses_done\n\nThe done() netlink callback nfc_genl_dump_ses_done() should check if\nreceived argument is non-NULL, because its allocation could fail earlier\nin dumpit() (nfc_genl_dump_ses())."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: nfc: corrige la posible deref del puntero NULL en nfc_genl_dump_ses_done La devoluci\u00f3n de llamada de netlink done() nfc_genl_dump_ses_done() debe verificar si el argumento recibido no es NULL, porque su asignaci\u00f3n podr\u00eda fallar antes en dumpit() (nfc_genl_dump_ses())."
    }
  ],
  "id": "CVE-2021-47518",
  "lastModified": "2026-06-17T04:17:40.657",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47518",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-17T17:36:30.333493Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-24T15:15:13.557",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/3b861a40325eac9c4c13b6c53874ad90617e944d"
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      "url": "https://git.kernel.org/stable/c/48fcd08fdbe05e35b650a252ec2a2d96057a1c7a"
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    },
    {
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    },
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    },
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      "tags": [
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    },
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      "tags": [
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    },
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
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      "url": "https://git.kernel.org/stable/c/fae9705d281091254d4a81fa2da9d22346097dca"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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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.