{
  "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-2025-39742",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-39742",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-11T16:52:16.339Z",
    "updatedAt": "2026-05-12T12:06:41.965Z",
    "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": "RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask()\n\nThe function divides number of online CPUs by num_core_siblings, and\nlater checks the divider by zero. This implies a possibility to get\nand divide-by-zero runtime error. Fix it by moving the check prior to\ndivision. This also helps to save one indentation level.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b094a36f90975373c3a241839869217a65f17d81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9bba1a9994c523b44db64f63b564b4719ea2b7ef"
            },
            {
              "version": "b094a36f90975373c3a241839869217a65f17d81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1a7cf828ed861de5be1aff99e10f114b363c19d3"
            },
            {
              "version": "b094a36f90975373c3a241839869217a65f17d81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9d3211cb61a0773a2440d0a0698c1e6e7429f907"
            },
            {
              "version": "b094a36f90975373c3a241839869217a65f17d81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4b4317b0d758ff92ba96f4e448a8992a6fe607bf"
            },
            {
              "version": "b094a36f90975373c3a241839869217a65f17d81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "89fdac333a17ed990b41565630ef4791782e02f5"
            },
            {
              "version": "b094a36f90975373c3a241839869217a65f17d81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b05e91afe948ed819bf87d7ba0fccf451ed79a6"
            },
            {
              "version": "b094a36f90975373c3a241839869217a65f17d81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "31d0599a23efdbfe579bfbd1eb8f8c942f13744d"
            },
            {
              "version": "b094a36f90975373c3a241839869217a65f17d81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ac53f377393cc85156afdc90b636e84e544a6f96"
            },
            {
              "version": "b094a36f90975373c3a241839869217a65f17d81",
              "status": "affected",
              "versionType": "git",
              "lessThan": "59f7d2138591ef8f0e4e4ab5f1ab674e8181ad3a"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.8"
            },
            {
              "version": "5.4.297",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.241",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.190",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.149",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.103",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.43",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.15.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.15.*"
            },
            {
              "version": "6.16.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}