{
  "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-2025-40198",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40198",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-11-12T21:56:33.220Z",
    "updatedAt": "2026-10-15T22:02:40.274Z",
    "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": "ext4: avoid potential buffer over-read in parse_apply_sb_mount_options()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid potential buffer over-read in parse_apply_sb_mount_options()\n\nUnlike other strings in the ext4 superblock, we rely on tune2fs to\nmake sure s_mount_opts is NUL terminated.  Harden\nparse_apply_sb_mount_options() by treating s_mount_opts as a potential\n__nonstring.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7bf46ff83a0ef11836e38ebd72cdc5107209342d"
            },
            {
              "version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b2bac84fde28fb6a88817b8b761abda17a1d300b"
            },
            {
              "version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e651294218d2684302ee5ed95ccf381646f3e5b4"
            },
            {
              "version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "01829af7656b56d83682b3491265d583d502e502"
            },
            {
              "version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2a0cf438320cdb783e0378570744c0ef0d83e934"
            },
            {
              "version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a6e94557cd05adc82fae0400f6e17745563e5412"
            },
            {
              "version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.36",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.36"
            },
            {
              "version": "5.4.301",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.246",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "6.1.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.114",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.54",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}