{
  "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-2026-64136",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-64136",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T15:40:30.351Z",
    "updatedAt": "2026-10-19T20:28:13.962Z",
    "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: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()\n\nCommit 96c4af418586 (\"cifs: Fix locking usage for tcon fields\")\nrefactored cifs code to change cifs_tcp_ses_lock for tc_lock around\ntc_count changes.\n\nThere was missing lock around tc_count increment inside\nsmb2_find_smb_sess_tcon_unlocked().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "953953abb66e52c224057ab91e404284fefeab62",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7df1df6f40c0720d30206aa35c0343b962350e0d"
            },
            {
              "version": "601dd3b79769b38d30b693c40afdb2a4b7edf9d0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "13fb413ae22a37c69341918a6d651d19a9b0b9b7"
            },
            {
              "version": "3969db6b22e3d90d8c5f22ac1a7fe0350a94c136",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bf4ebdb19ff9b3cdf992b50715fe61633327416a"
            },
            {
              "version": "96c4af418586ee9a6aab61738644366426e05316",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e374f4e496fef8168784f93a4477d67be34485fd"
            },
            {
              "version": "96c4af418586ee9a6aab61738644366426e05316",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4d8690dace005a38e6dbde9ecce2da3ad85c7c41"
            },
            {
              "version": "8c59eeeeffa1524ef57e173a89a1a3ff539888d5",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "6.6.128",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.142"
            },
            {
              "version": "6.12.75",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.92"
            },
            {
              "version": "6.18.16",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.18.34"
            },
            {
              "version": "6.19.6",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.20"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "7.0",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "7.0"
            },
            {
              "version": "6.6.142",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.92",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.34",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}