{
  "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-2024-26990",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-26990",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-05-01T05:27:48.810Z",
    "updatedAt": "2026-08-05T11:28:51.630Z",
    "importedAt": "2026-10-24T01:57:07.518Z",
    "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": "KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty status\n\nCheck kvm_mmu_page_ad_need_write_protect() when deciding whether to\nwrite-protect or clear D-bits on TDP MMU SPTEs, so that the TDP MMU\naccounts for any role-specific reasons for disabling D-bit dirty logging.\n\nSpecifically, TDP MMU SPTEs must be write-protected when the TDP MMU is\nbeing used to run an L2 (i.e. L1 has disabled EPT) and PML is enabled.\nKVM always disables PML when running L2, even when L1 and L2 GPAs are in\nthe some domain, so failing to write-protect TDP MMU SPTEs will cause\nwrites made by L2 to not be reflected in the dirty log.\n\n[sean: massage shortlog and changelog, tweak ternary op formatting]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5982a5392663b30f57ee90b0372c19a7e9cb655a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cdf811a937471af2d1facdf8ae80e5e68096f1ed"
            },
            {
              "version": "5982a5392663b30f57ee90b0372c19a7e9cb655a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e20bff0f1b2de9cfe303dd35ff46470104a87404"
            },
            {
              "version": "5982a5392663b30f57ee90b0372c19a7e9cb655a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2673dfb591a359c75080dd5af3da484b89320d22"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.4",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.4"
            },
            {
              "version": "6.6.29",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.8.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.8.*"
            },
            {
              "version": "6.9",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}