{
  "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-2021-46991",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-46991",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-28T08:13:17.195Z",
    "updatedAt": "2026-05-11T13:45:50.600Z",
    "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": "i40e: Fix use-after-free in i40e_client_subtask()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix use-after-free in i40e_client_subtask()\n\nCurrently the call to i40e_client_del_instance frees the object\npf->cinst, however pf->cinst->lan_info is being accessed after\nthe free. Fix this by adding the missing return.\n\nAddresses-Coverity: (\"Read from pointer after free\")",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7b0b1a6d0ac983ce1928432285d0222d4fb7c38b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c1322eaeb8af0d8985b5cc5fa759140fa0e57b84"
            },
            {
              "version": "7b0b1a6d0ac983ce1928432285d0222d4fb7c38b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d718c15a2bf9ae082d5ae4d177fb19ef23cb4132"
            },
            {
              "version": "7b0b1a6d0ac983ce1928432285d0222d4fb7c38b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "829a713450b8fb127cbabfc1244c1d8179ec5107"
            },
            {
              "version": "7b0b1a6d0ac983ce1928432285d0222d4fb7c38b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4ebc10aa7cd17fd9857dedac69600465c9dd16d1"
            },
            {
              "version": "7b0b1a6d0ac983ce1928432285d0222d4fb7c38b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1fd5d262e7442192ac7611ff1597a36c5b044323"
            },
            {
              "version": "7b0b1a6d0ac983ce1928432285d0222d4fb7c38b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "38318f23a7ef86a8b1862e5e8078c4de121960c3"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.16",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.16"
            },
            {
              "version": "4.19.191",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.120",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.38",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.11.22",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.11.*"
            },
            {
              "version": "5.12.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}