{
  "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-2026-43020",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43020",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-01T14:15:23.699Z",
    "updatedAt": "2026-05-11T22:16:09.294Z",
    "importedAt": "2026-10-24T01:58:08.712Z",
    "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": "Bluetooth: MGMT: validate LTK enc_size on load",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: validate LTK enc_size on load\n\nLoad Long Term Keys stores the user-provided enc_size and later uses\nit to size fixed-size stack operations when replying to LE LTK\nrequests. An enc_size larger than the 16-byte key buffer can therefore\noverflow the reply stack buffer.\n\nReject oversized enc_size values while validating the management LTK\nrecord so invalid keys never reach the stored key state.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "346af67b8d116f01ef696fd47959a55deb2db8b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f37d1e65c6d71ad94ccfb5c602163c525db789d"
            },
            {
              "version": "346af67b8d116f01ef696fd47959a55deb2db8b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "257cdb960d8ff6d60bb6461b03c814b6cf0c9e64"
            },
            {
              "version": "346af67b8d116f01ef696fd47959a55deb2db8b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c34577f517b556fb6ca173d45bf7e766ae2564ce"
            },
            {
              "version": "346af67b8d116f01ef696fd47959a55deb2db8b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f71695e81f4cb428f3c7e2138eae88199005b52c"
            },
            {
              "version": "346af67b8d116f01ef696fd47959a55deb2db8b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "82f342b3b006ca1d65f4890c05f2ec32fcb808b6"
            },
            {
              "version": "346af67b8d116f01ef696fd47959a55deb2db8b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "50fb64defa72a3fecd0af1ca7c6b47b5c5c2b257"
            },
            {
              "version": "346af67b8d116f01ef696fd47959a55deb2db8b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "40ba329e8b4cd2fb11b0caf5e6a543ceaebb6009"
            },
            {
              "version": "346af67b8d116f01ef696fd47959a55deb2db8b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b8dbe9648d69059cfe3a28917bfbf7e61efd7f15"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.4",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.4"
            },
            {
              "version": "5.10.253",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.203",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.168",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.134",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.81",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.22",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}