{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2021-47416",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47416",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-21T15:04:06.042Z",
    "updatedAt": "2026-05-11T13:54:16.957Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "phy: mdio: fix memory leak",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: mdio: fix memory leak\n\nSyzbot reported memory leak in MDIO bus interface, the problem was in\nwrong state logic.\n\nMDIOBUS_ALLOCATED indicates 2 states:\n\t1. Bus is only allocated\n\t2. Bus allocated and __mdiobus_register() fails, but\n\t   device_register() was called\n\nIn case of device_register() has been called we should call put_device()\nto correctly free the memory allocated for this device, but mdiobus_free()\ncalls just kfree(dev) in case of MDIOBUS_ALLOCATED state\n\nTo avoid this behaviour we need to set bus->state to MDIOBUS_UNREGISTERED\n_before_ calling device_register(), because put_device() should be\ncalled even in case of device_register() failure.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "46abc02175b3c246dd5141d878f565a8725060c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "25e9f88c7e3cc35f5e3d3db199660d28a15df639"
            },
            {
              "version": "46abc02175b3c246dd5141d878f565a8725060c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2250392d930bd0d989f24d355d6355b0150256e7"
            },
            {
              "version": "46abc02175b3c246dd5141d878f565a8725060c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f4f502a04ee1e543825af78f47eb7785015cd9f6"
            },
            {
              "version": "46abc02175b3c246dd5141d878f565a8725060c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2397b9e118721292429fea8807a698e71b94795f"
            },
            {
              "version": "46abc02175b3c246dd5141d878f565a8725060c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "414bb4ead1362ef2c8592db723c017258f213988"
            },
            {
              "version": "46abc02175b3c246dd5141d878f565a8725060c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0d2dd40a7be61b89a7c99dae8ee96389d27b413a"
            },
            {
              "version": "46abc02175b3c246dd5141d878f565a8725060c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "064c2616234a7394867c924b5c1303974f3a4f4d"
            },
            {
              "version": "46abc02175b3c246dd5141d878f565a8725060c9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ca6e11c337daf7925ff8a2aac8e84490a8691905"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.28",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.28"
            },
            {
              "version": "4.4.289",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.4.*"
            },
            {
              "version": "4.9.287",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "version": "4.14.251",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.211",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.153",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.73",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.14.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.14.*"
            },
            {
              "version": "5.15",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}