{
  "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-2021-28693",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-28693",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2021-06-30T10:32:26.000Z",
    "updatedAt": "2024-08-03T21:47:33.196Z",
    "importedAt": "2026-10-24T01:56:26.894Z",
    "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": null,
      "summary": "xen/arm: Boot modules are not scrubbed The bootloader will load boot modules (e.g. kernel, initramfs...) in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must \"scrub\" them before handing the page over to the allocator. Unfortunately, it was discovered that modules will not be scrubbed on Arm.",
      "affected": [
        {
          "vendor": "Xen",
          "product": "xen",
          "versions": [
            {
              "version": "4.15.x",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Xen",
          "product": "xen",
          "versions": [
            {
              "version": "unspecified",
              "status": "unknown",
              "versionType": "custom",
              "lessThan": "4.12"
            },
            {
              "version": "4.13.x",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "unspecified"
            },
            {
              "version": "next of 4.14.x",
              "status": "unaffected",
              "versionType": "custom",
              "lessThan": "unspecified"
            }
          ]
        },
        {
          "vendor": "Xen",
          "product": "xen",
          "versions": [
            {
              "version": "xen-unstable",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Xen",
          "product": "xen",
          "versions": [
            {
              "version": "4.12.x",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}