{
  "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-2021-47252",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47252",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-21T14:19:48.174Z",
    "updatedAt": "2026-05-11T13:50:54.161Z",
    "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": "batman-adv: Avoid WARN_ON timing related checks",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: Avoid WARN_ON timing related checks\n\nThe soft/batadv interface for a queued OGM can be changed during the time\nthe OGM was queued for transmission and when the OGM is actually\ntransmitted by the worker.\n\nBut WARN_ON must be used to denote kernel bugs and not to print simple\nwarnings. A warning can simply be printed using pr_warn.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "status": "affected",
              "versionType": "git",
              "lessThan": "45011f2973f6b52cf50db397bb27bf805f5f0e7f"
            },
            {
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6031daaaf6d5c359c99dfffa102e332df234ff09"
            },
            {
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "status": "affected",
              "versionType": "git",
              "lessThan": "77a99aad5bc3ea105806ebae6be3cbadc2fc615e"
            },
            {
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e8e9d2968a9d08bf5c683afca182f1537edebf8d"
            },
            {
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4"
            },
            {
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "status": "affected",
              "versionType": "git",
              "lessThan": "282baa8104af44e04c4af3e7f933b44267c7f86f"
            },
            {
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2eb4e0b3631832a4291c8bf4c9db873f60b128c8"
            },
            {
              "version": "ef0a937f7a1450d3a133ccd83c9c7d07587e7a00",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9f460ae31c4435fd022c443a6029352217a16ac1"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.14"
            },
            {
              "version": "4.4.293",
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}