{
  "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-2026-89745",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89745",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:46:50.758Z",
    "updatedAt": "2026-10-19T08:51:59.176Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "debugfs: Fix lockdown check for mmap_prepare",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndebugfs: Fix lockdown check for mmap_prepare\n\nCommit 651fdda8406d (\"relay: update relay to use mmap_prepare\")\nchanged the `mmap` file operation to `mmap_prepare` for relayfs, but\nthe lockdown check in debugfs was not updated accordingly.\n\nThis prevents debugfs from being locked down when the kernel is in\nintegrity mode if a file uses `mmap_prepare` but not `mmap`.\n\nSince the conversion to `mmap_prepare` across the kernel is not yet\ncomplete, update the lockdown check to look for both `mmap` and\n`mmap_prepare` to ensure comprehensive coverage.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "651fdda8406d42a5004c5c79f269540a85d6a1ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e7f6a6b5741d16fdac7adaecbe0fa52ae756f208"
            },
            {
              "version": "651fdda8406d42a5004c5c79f269540a85d6a1ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f81808de37338aac8e167f99bfae647b1b835c70"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.19"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}