{
  "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-2021-47236",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47236",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-21T14:19:37.724Z",
    "updatedAt": "2026-05-11T13:50:35.712Z",
    "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: cdc_eem: fix tx fixup skb leak",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: cdc_eem: fix tx fixup skb leak\n\nwhen usbnet transmit a skb, eem fixup it in eem_tx_fixup(),\nif skb_copy_expand() failed, it return NULL,\nusbnet_start_xmit() will have no chance to free original skb.\n\nfix it by free orginal skb in eem_tx_fixup() first,\nthen check skb clone status, if failed, return NULL to usbnet.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "9f722c0978b04acba209f8ca1896ad05814bc3a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f12554b0ff639e74612cc01b3b4a049e098d2d65"
            },
            {
              "version": "9f722c0978b04acba209f8ca1896ad05814bc3a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "14184ec5c958b589ba934da7363a2877879204df"
            },
            {
              "version": "9f722c0978b04acba209f8ca1896ad05814bc3a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1bcacd6088d61c0ac6a990d87975600a81f3247e"
            },
            {
              "version": "9f722c0978b04acba209f8ca1896ad05814bc3a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f4e6a7f19c82f39b1803e91c54718f0d7143767d"
            },
            {
              "version": "9f722c0978b04acba209f8ca1896ad05814bc3a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "81de2ed06df8b5451e050fe6a318af3263dbff3f"
            },
            {
              "version": "9f722c0978b04acba209f8ca1896ad05814bc3a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "05b2b9f7d24b5663d9b47427fe1555bdafd3ea02"
            },
            {
              "version": "9f722c0978b04acba209f8ca1896ad05814bc3a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88"
            },
            {
              "version": "9f722c0978b04acba209f8ca1896ad05814bc3a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.30",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.30"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}