{
  "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-2026-97421",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-97421",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-24T16:03:31.505Z",
    "updatedAt": "2026-10-03T10:58:13.282Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "RDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz()\n\nSeveral corner cases, especially important on 32 bits:\n\n- umem->iova is u64, the function argument should pass in u64 or\n  iova will be truncated\n- Check that the length is not too large for the iova\n- Check that lengths > 4G don't overflow the GENMASK",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a40c20dabdf9045270767c75918feb67f0727c89",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3014da7587ce006cd08004fd6b257626b314e0a3"
            },
            {
              "version": "a40c20dabdf9045270767c75918feb67f0727c89",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ddccf6cc3861de2fe60986933bead79220e0d797"
            },
            {
              "version": "a40c20dabdf9045270767c75918feb67f0727c89",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e9bbb5f5349ef560ff6f0395564f04c3aa664559"
            },
            {
              "version": "a40c20dabdf9045270767c75918feb67f0727c89",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ae3cf7d2c4d506c5c91746321644e1a08d989e2a"
            },
            {
              "version": "a40c20dabdf9045270767c75918feb67f0727c89",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5fc5b73109540809b094710fac44da81dd8a3ff8"
            },
            {
              "version": "a40c20dabdf9045270767c75918feb67f0727c89",
              "status": "affected",
              "versionType": "git",
              "lessThan": "09ea6837a0434fb4db99528a5055b6d822135dcf"
            },
            {
              "version": "85e40ba1c4a5246b35e91c2ed69d4680426904d7",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "59f07434b297e2268f5d5c567db5b09145245cf1",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "488229b7729d7becf4c39c5e74fb709fb35115c2",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.4.73",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "5.8.17",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.9"
            },
            {
              "version": "5.9.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.10",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.10"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}