{
  "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-2026-31735",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31735",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-01T14:14:32.923Z",
    "updatedAt": "2026-08-05T12:24:53.937Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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": "iommupt: Fix short gather if the unmap goes into a large mapping",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\niommupt: Fix short gather if the unmap goes into a large mapping\n\nunmap has the odd behavior that it can unmap more than requested if the\nending point lands within the middle of a large or contiguous IOPTE.\n\nIn this case the gather should flush everything unmapped which can be\nlarger than what was requested to be unmapped. The gather was only\nflushing the range requested to be unmapped, not extending to the extra\nrange, resulting in a short invalidation if the caller hits this special\ncondition.\n\nThis was found by the new invalidation/gather test I am adding in\npreparation for ARMv8. Claude deduced the root cause.\n\nAs far as I remember nothing relies on unmapping a large entry, so this is\nlikely not a triggerable bug.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7c53f4238aa8bfb476e177263133ead2eeb8d55d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "50ecd96a28f712f8b682c0441f4cb9b086d28816"
            },
            {
              "version": "7c53f4238aa8bfb476e177263133ead2eeb8d55d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ee6e69d032550687a3422504bfca3f834c7b5061"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.19"
            },
            {
              "version": "6.19.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}