{
  "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-2025-40058",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40058",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-28T11:48:31.567Z",
    "updatedAt": "2026-08-05T12:07:25.986Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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": "iommu/vt-d: Disallow dirty tracking if incoherent page walk",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Disallow dirty tracking if incoherent page walk\n\nDirty page tracking relies on the IOMMU atomically updating the dirty bit\nin the paging-structure entry. For this operation to succeed, the paging-\nstructure memory must be coherent between the IOMMU and the CPU. In\nanother word, if the iommu page walk is incoherent, dirty page tracking\ndoesn't work.\n\nThe Intel VT-d specification, Section 3.10 \"Snoop Behavior\" states:\n\n\"Remapping hardware encountering the need to atomically update A/EA/D bits\n in a paging-structure entry that is not snooped will result in a non-\n recoverable fault.\"\n\nTo prevent an IOMMU from being incorrectly configured for dirty page\ntracking when it is operating in an incoherent mode, mark SSADS as\nsupported only when both ecap_slads and ecap_smpwc are supported.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f35f22cc760eb2c7034bf53251399685d611e03f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ebe16d245a00626bb87163862a1b07daf5475a3e"
            },
            {
              "version": "f35f22cc760eb2c7034bf53251399685d611e03f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8d096ce0e87bdc361f0b25d7943543bc53aa0b9e"
            },
            {
              "version": "f35f22cc760eb2c7034bf53251399685d611e03f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "57f55048e564dedd8a4546d018e29d6bbfff0a7e"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.7",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.7"
            },
            {
              "version": "6.12.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}