{
  "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-2021-47235",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47235",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-21T14:19:37.070Z",
    "updatedAt": "2026-05-11T13:50:34.524Z",
    "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": "net: ethernet: fix potential use-after-free in ec_bhf_remove",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: fix potential use-after-free in ec_bhf_remove\n\nstatic void ec_bhf_remove(struct pci_dev *dev)\n{\n...\n\tstruct ec_bhf_priv *priv = netdev_priv(net_dev);\n\n\tunregister_netdev(net_dev);\n\tfree_netdev(net_dev);\n\n\tpci_iounmap(dev, priv->dma_io);\n\tpci_iounmap(dev, priv->io);\n...\n}\n\npriv is netdev private data, but it is used\nafter free_netdev(). It can cause use-after-free when accessing priv\npointer. So, fix it by moving free_netdev() after pci_iounmap()\ncalls.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6af55ff52b02d492d45db88df3e461fa51a6f753",
              "status": "affected",
              "versionType": "git",
              "lessThan": "db2bc3cfd2bc01621014d4f17cdfc74611f339c8"
            },
            {
              "version": "6af55ff52b02d492d45db88df3e461fa51a6f753",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1cafc540b7bf1b6a5a77dc000205fe337ef6eba6"
            },
            {
              "version": "6af55ff52b02d492d45db88df3e461fa51a6f753",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b1ad283755095a4b9d1431aeb357d7df1a33d3bb"
            },
            {
              "version": "6af55ff52b02d492d45db88df3e461fa51a6f753",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0260916843cc74f3906acf8b6f256693e01530a2"
            },
            {
              "version": "6af55ff52b02d492d45db88df3e461fa51a6f753",
              "status": "affected",
              "versionType": "git",
              "lessThan": "19f88ca68ccf8771276a606765239b167654f84a"
            },
            {
              "version": "6af55ff52b02d492d45db88df3e461fa51a6f753",
              "status": "affected",
              "versionType": "git",
              "lessThan": "95deeb29d831e2fae608439e243e7a520611e7ea"
            },
            {
              "version": "6af55ff52b02d492d45db88df3e461fa51a6f753",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d11d79e52ba080ee567cb7d7eb42a5ade60a8130"
            },
            {
              "version": "6af55ff52b02d492d45db88df3e461fa51a6f753",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9cca0c2d70149160407bda9a9446ce0c29b6e6c6"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.15"
            },
            {
              "version": "4.4.274",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.4.*"
            },
            {
              "version": "4.9.274",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "version": "4.14.238",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.196",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.128",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.46",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.12.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}