{
  "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-2021-47248",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47248",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-21T14:19:45.588Z",
    "updatedAt": "2026-08-05T08:46:58.552Z",
    "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": "udp: fix race between close() and udp_abort()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nudp: fix race between close() and udp_abort()\n\nKaustubh reported and diagnosed a panic in udp_lib_lookup().\nThe root cause is udp_abort() racing with close(). Both\nracing functions acquire the socket lock, but udp{v6}_destroy_sock()\nrelease it before performing destructive actions.\n\nWe can't easily extend the socket lock scope to avoid the race,\ninstead use the SOCK_DEAD flag to prevent udp_abort from doing\nany action when the critical race happens.\n\nDiagnosed-and-tested-by: Kaustubh Pandey <kapandey@codeaurora.org>",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5d77dca82839ef016a93ad7acd7058b14d967752",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e3c36c773aed0fef8b1d3d555b43393ec564400f"
            },
            {
              "version": "5d77dca82839ef016a93ad7acd7058b14d967752",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a0882f68f54f7a8b6308261acee9bd4faab5a69e"
            },
            {
              "version": "5d77dca82839ef016a93ad7acd7058b14d967752",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2f73448041bd0682d4b552cfd314ace66107f1ad"
            },
            {
              "version": "5d77dca82839ef016a93ad7acd7058b14d967752",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5a88477c1c85e4baa51e91f2d40f2166235daa56"
            },
            {
              "version": "5d77dca82839ef016a93ad7acd7058b14d967752",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8729ec8a2238152a4afc212a331a6cd2c61aeeac"
            },
            {
              "version": "5d77dca82839ef016a93ad7acd7058b14d967752",
              "status": "affected",
              "versionType": "git",
              "lessThan": "65310b0aff86980a011c7c7bfa487a333d4ca241"
            },
            {
              "version": "5d77dca82839ef016a93ad7acd7058b14d967752",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a8b897c7bcd47f4147d066e22cc01d1026d7640e"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.9"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}