{
  "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-2023-52440",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-52440",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-21T07:21:00.438Z",
    "updatedAt": "2026-08-15T12:23:46.483Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "ksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob()\n\nIf authblob->SessionKey.Length is bigger than session key\nsize(CIFS_KEY_SIZE), slub overflow can happen in key exchange codes.\ncifs_arc4_crypt copy to session key array from SessionKey from client.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "c5049d2d73b2dc8e6bb64be633250bad1ae3d9ef",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bd554ed4fdc3d38404a1c43d428432577573e809"
            },
            {
              "version": "f9929ef6a2a55f03aac61248c6a3a987b8546f2a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "30fd6521b2fbd9b767e438e31945e5ea3e3a2fba"
            },
            {
              "version": "f9929ef6a2a55f03aac61248c6a3a987b8546f2a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7f1d6cb0eb6af3a8088dc24b7ddee9a9711538c4"
            },
            {
              "version": "f9929ef6a2a55f03aac61248c6a3a987b8546f2a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ecd7e1c562cb08e41957fcd4b0e404de5ab38e20"
            },
            {
              "version": "f9929ef6a2a55f03aac61248c6a3a987b8546f2a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4b081ce0d830b684fdf967abc3696d1261387254"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.17"
            },
            {
              "version": "6.1.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.4.15",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "version": "6.5.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "version": "6.6",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}