{
  "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-2025-39973",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-39973",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-15T07:55:55.590Z",
    "updatedAt": "2026-10-15T22:02:34.963Z",
    "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": "i40e: add validation for ring_len param",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: add validation for ring_len param\n\nThe `ring_len` parameter provided by the virtual function (VF)\nis assigned directly to the hardware memory context (HMC) without\nany validation.\n\nTo address this, introduce an upper boundary check for both Tx and Rx\nqueue lengths. The maximum number of descriptors supported by the\nhardware is 8k-32.\nAdditionally, enforce alignment constraints: Tx rings must be a multiple\nof 8, and Rx rings must be a multiple of 32.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5c3c48ac6bf56367c4e89f6453cd2d61e50375bd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0543d40d6513cdf1c7882811086e59a6455dfe97"
            },
            {
              "version": "5c3c48ac6bf56367c4e89f6453cd2d61e50375bd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7d749e38dd2b7e8a80da2ca30c93e09de95bfcf9"
            },
            {
              "version": "5c3c48ac6bf56367c4e89f6453cd2d61e50375bd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "45a7527cd7da4cdcf3b06b5c0cb1cae30b5a5985"
            },
            {
              "version": "5c3c48ac6bf56367c4e89f6453cd2d61e50375bd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d3b0d3f8d11fa957171fbb186e53998361a88d4e"
            },
            {
              "version": "5c3c48ac6bf56367c4e89f6453cd2d61e50375bd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c0c83f4cd074b75cecef107bfc349be7d516c9c4"
            },
            {
              "version": "5c3c48ac6bf56367c4e89f6453cd2d61e50375bd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "05fe81fb9db20464fa532a3835dc8300d68a2f84"
            },
            {
              "version": "5c3c48ac6bf56367c4e89f6453cd2d61e50375bd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "afec12adab55d10708179a64d95d650741e60fe0"
            },
            {
              "version": "5c3c48ac6bf56367c4e89f6453cd2d61e50375bd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "55d225670def06b01af2e7a5e0446fbe946289e8"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.12"
            },
            {
              "version": "5.4.300",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.245",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.194",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.155",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.16.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}