{
  "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-2026-64380",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-64380",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-25T08:50:30.476Z",
    "updatedAt": "2026-10-19T20:38:25.851Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "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": "smb: client: harden POSIX SID length parsing",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: harden POSIX SID length parsing\n\nposix_info_sid_size() reads sid[1] to obtain the subauthority count,\nbut its existing boundary check still accepts buffers with only one\nremaining byte. Require two bytes before reading sid[1] so all client\npaths that reuse the helper reject truncated POSIX SIDs safely.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "171605aed68380c2fa75dff9b3a1ed427c50065b"
            },
            {
              "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4213c1208978483021d7d125c131de3985d38f61"
            },
            {
              "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "96e889bc1e759c83f25093e8c2f3da31b4973f30"
            },
            {
              "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0de5b8e76847f5de26f364a82c6602c4881c30da"
            },
            {
              "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "427eb7eb46425fec845a43e861f3d6e2899cae59"
            },
            {
              "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "86c5d470f5d42e61123b2f4b4f0b91f4eee5b980"
            },
            {
              "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "46a84715a015cb48e1b9c219dc88c03d8a541ea4"
            },
            {
              "version": "349e13ad30b45998bb9937cfe0b32be6f951976d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7ad2bcf2441430bb2e918fb3ef9a90d775a6e422"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.7",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.7"
            },
            {
              "version": "5.10.261",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.96",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.39",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}