{
  "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-2021-46953",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-46953",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-27T18:40:35.960Z",
    "updatedAt": "2026-05-11T13:45:07.460Z",
    "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": "ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure\n\nWhen failing the driver probe because of invalid firmware properties,\nthe GTDT driver unmaps the interrupt that it mapped earlier.\n\nHowever, it never checks whether the mapping of the interrupt actially\nsucceeded. Even more, should the firmware report an illegal interrupt\nnumber that overlaps with the GIC SGI range, this can result in an\nIPI being unmapped, and subsequent fireworks (as reported by Dann\nFrazier).\n\nRework the driver to have a slightly saner behaviour and actually\ncheck whether the interrupt has been mapped before unmapping things.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ca9ae5ec4ef0ed13833b03297ab319676965492c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c3385a9122f8db15b453e07bfc88117fce7f3724"
            },
            {
              "version": "ca9ae5ec4ef0ed13833b03297ab319676965492c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7b2162db1498c71962a4bb2f776fa4e76d4d305b"
            },
            {
              "version": "ca9ae5ec4ef0ed13833b03297ab319676965492c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "504632a3577a049dd9bb7aabae5b4476f9c586b4"
            },
            {
              "version": "ca9ae5ec4ef0ed13833b03297ab319676965492c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e0f2d86481eaa83df33b0793f75212919db7a19d"
            },
            {
              "version": "ca9ae5ec4ef0ed13833b03297ab319676965492c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "42e69521ee1fa5abf21f478d147d06bbfe6bf6a8"
            },
            {
              "version": "ca9ae5ec4ef0ed13833b03297ab319676965492c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "596e079c362ac17ed02aa1b99fdc444d62072a01"
            },
            {
              "version": "ca9ae5ec4ef0ed13833b03297ab319676965492c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1ecd5b129252249b9bc03d7645a7bda512747277"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.12"
            },
            {
              "version": "4.14.233",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.191",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.118",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.36",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.11.20",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.11.*"
            },
            {
              "version": "5.12.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}