FKIE_CVE-2021-47612

Vulnerability from fkie_nvd - Published: 2024-06-19 15:15 - Updated: 2026-06-17 04:18
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 segfault in nfc_genl_dump_devices_done When kmalloc in nfc_genl_dump_devices() fails then nfc_genl_dump_devices_done() segfaults as below KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/2014 Workqueue: events netlink_sock_destruct_work RIP: 0010:klist_iter_exit+0x26/0x80 Call Trace: <TASK> class_dev_iter_exit+0x15/0x20 nfc_genl_dump_devices_done+0x3b/0x50 genl_lock_done+0x84/0xd0 netlink_sock_destruct+0x8f/0x270 __sk_destruct+0x64/0x3b0 sk_destruct+0xa8/0xd0 __sk_free+0x2e8/0x3d0 sk_free+0x51/0x90 netlink_sock_destruct_work+0x1c/0x20 process_one_work+0x411/0x710 worker_thread+0x6fd/0xa80
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203Patch
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": [
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          "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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              "versionType": "git"
            },
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              "status": "affected",
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              "versionType": "git"
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              "status": "affected",
              "version": "4d12b8b129f170d0fc3188de1e51a2a1b0f87730",
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              "status": "affected",
              "version": "4d12b8b129f170d0fc3188de1e51a2a1b0f87730",
              "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": "3.1"
            },
            {
              "lessThan": "3.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.296",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.294",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1FF3BCF2-4788-45E7-BDAC-845DEBF8922F",
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              "vulnerable": true
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            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "390D64FF-1DB7-4DD1-ADEF-CE96BEA2607C",
              "versionEndExcluding": "4.14.259",
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            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2D0D89BC-6CF8-4BFB-8C91-472348052528",
              "versionEndExcluding": "4.19.222",
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            {
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              "matchCriteriaId": "942818CD-79A1-41C4-8695-4C9BA6D2A2DE",
              "versionEndExcluding": "5.4.167",
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              "matchCriteriaId": "CFD35461-7F6C-4537-840D-5ED5BAB2D315",
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: fix segfault in nfc_genl_dump_devices_done\n\nWhen kmalloc in nfc_genl_dump_devices() fails then\nnfc_genl_dump_devices_done() segfaults as below\n\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nCPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/2014\nWorkqueue: events netlink_sock_destruct_work\nRIP: 0010:klist_iter_exit+0x26/0x80\nCall Trace:\n\u003cTASK\u003e\nclass_dev_iter_exit+0x15/0x20\nnfc_genl_dump_devices_done+0x3b/0x50\ngenl_lock_done+0x84/0xd0\nnetlink_sock_destruct+0x8f/0x270\n__sk_destruct+0x64/0x3b0\nsk_destruct+0xa8/0xd0\n__sk_free+0x2e8/0x3d0\nsk_free+0x51/0x90\nnetlink_sock_destruct_work+0x1c/0x20\nprocess_one_work+0x411/0x710\nworker_thread+0x6fd/0xa80"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfc: corrige el error de segmentaci\u00f3n en nfc_genl_dump_devices_done Cuando falla kmalloc en nfc_genl_dump_devices(), entonces el error de segmentaci\u00f3n de nfc_genl_dump_devices_done() se muestra a continuaci\u00f3n KASAN: null-ptr-deref en el rango [0x0000000000000008-0x00 0000000000000f] CPU: 0 PID : 25 Comm: kworker/0:1 Not tainted 5.16.0-rc4-01180-g2a987e65025e-dirty #5 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.14.0-6.fc35 04/01/ 2014 Cola de trabajo: eventos netlink_sock_destruct_work RIP: 0010:klist_iter_exit+0x26/0x80 Seguimiento de llamadas:  class_dev_iter_exit+0x15/0x20 nfc_genl_dump_devices_done+0x3b/0x50 genl_lock_done+0x84/0xd0 estructura+0x8f/0x270 __sk_destruct+0x64/0x3b0 sk_destruct+0xa8/0xd0 __sk_free+0x2e8/0x3d0 sk_free+0x51/0x90 netlink_sock_destruct_work+0x1c/0x20 Process_one_work+0x411/0x710 trabajador_thread+0x6fd/0xa80"
    }
  ],
  "id": "CVE-2021-47612",
  "lastModified": "2026-06-17T04:18:09.797",
  "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-2021-47612",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-20T13:23:29.231566Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-06-19T15:15:55.750",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529c"
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    },
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    },
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3"
    },
    {
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946c"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96d"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/ea55b3797878752aa076b118afb727dcf79cac34"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203"
    }
  ],
  "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

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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.
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  • 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.