{
  "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-2021-46967",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-46967",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-27T18:47:04.253Z",
    "updatedAt": "2026-08-05T08:45:17.104Z",
    "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": "vhost-vdpa: fix vm_flags for virtqueue doorbell mapping",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvhost-vdpa: fix vm_flags for virtqueue doorbell mapping\n\nThe virtqueue doorbell is usually implemented via registeres but we\ndon't provide the necessary vma->flags like VM_PFNMAP. This may cause\nseveral issues e.g when userspace tries to map the doorbell via vhost\nIOTLB, kernel may panic due to the page is not backed by page\nstructure. This patch fixes this by setting the necessary\nvm_flags. With this patch, try to map doorbell via IOTLB will fail\nwith bad address.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "940230a5c31e2714722aee04c521a21f484b4df7"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "93dbbf20e3ffad14f04227a0b7105f6e6f0387ce"
            },
            {
              "version": "ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.8"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}