{
  "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-2025-40174",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40174",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-11-12T10:53:49.859Z",
    "updatedAt": "2026-08-05T12:08:19.978Z",
    "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": "x86/mm: Fix SMP ordering in switch_mm_irqs_off()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm: Fix SMP ordering in switch_mm_irqs_off()\n\nStephen noted that it is possible to not have an smp_mb() between\nthe loaded_mm store and the tlb_gen load in switch_mm(), meaning the\nordering against flush_tlb_mm_range() goes out the window, and it\nbecomes possible for switch_mm() to not observe a recent tlb_gen\nupdate and fail to flush the TLBs.\n\n[ dhansen: merge conflict fixed by Ingo ]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "209954cbc7d0ce1a190fc725d20ce303d74d2680",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0fe5e3f5fb75c5d88dad24dece3ee75e9d87adeb"
            },
            {
              "version": "209954cbc7d0ce1a190fc725d20ce303d74d2680",
              "status": "affected",
              "versionType": "git",
              "lessThan": "83b0177a6c4889b3a6e865da5e21b2c9d97d0551"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.14"
            },
            {
              "version": "6.17.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}