{
  "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-2026-31513",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31513",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-22T13:54:30.835Z",
    "updatedAt": "2026-10-19T18:45:54.652Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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: L2CAP: Fix stack-out-of-bounds read in l2cap_ecred_conn_req",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix stack-out-of-bounds read in l2cap_ecred_conn_req\n\nSyzbot reported a KASAN stack-out-of-bounds read in l2cap_build_cmd()\nthat is triggered by a malformed Enhanced Credit Based Connection Request.\n\nThe vulnerability stems from l2cap_ecred_conn_req(). The function allocates\na local stack buffer (`pdu`) designed to hold a maximum of 5 Source Channel\nIDs (SCIDs), totaling 18 bytes. When an attacker sends a request with more\nthan 5 SCIDs, the function calculates `rsp_len` based on this unvalidated\n`cmd_len` before checking if the number of SCIDs exceeds\nL2CAP_ECRED_MAX_CID.\n\nIf the SCID count is too high, the function correctly jumps to the\n`response` label to reject the packet, but `rsp_len` retains the\nattacker's oversized value. Consequently, l2cap_send_cmd() is instructed\nto read past the end of the 18-byte `pdu` buffer, triggering a\nKASAN panic.\n\nFix this by moving the assignment of `rsp_len` to after the `num_scid`\nboundary check. If the packet is rejected, `rsp_len` will safely\nremain 0, and the error response will only read the 8-byte base header\nfrom the stack.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "935f324e4b2461df2cf7f02b4195082b4304c708",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c8e1a27edb8b4e5afb56b384acd7b6c2dec1b7cc"
            },
            {
              "version": "e981a9392800ce2c5bca196a6ab2c55e9370efaa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5b35f8211a913cfe7ab9d54fa36a272d2059a588"
            },
            {
              "version": "f3fdf2e7276a3edc5df55454275da20eac186970",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a3d9c50d69785ae02e153f000da1b5fd6dbfdf1b"
            },
            {
              "version": "c28d2bff70444a85b3b86aaf241ece9408c7858c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9d87cb22195b2c67405f5485d525190747ad5493"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6.12.75",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.80"
            },
            {
              "version": "6.18.16",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.18.21"
            },
            {
              "version": "6.19.6",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.19.11"
            }
          ]
        }
      ]
    }
  }
}