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    },
    "updated": {
      "data": "2026-08-13T15:11:16.750000+00:00",
      "provider": "nvd"
    },
    "vendors": {
      "data": [
        "linux",
        "linux$PRODUCT$linux_kernel"
      ],
      "providers": [
        "mitre",
        "nvd",
        "enrichment"
      ]
    },
    "weaknesses": {
      "data": [
        "CWE-125",
        "CWE-805"
      ],
      "providers": [
        "nvd",
        "redhat"
      ]
    }
  },
  "redhat": {
    "cpes": [],
    "created": "2026-07-19T00:00:00+00:00",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\nBluetooth: MGMT: validate Add Extended Advertising Data length\nMGMT_OP_ADD_EXT_ADV_DATA is registered as a variable-length command,\nwith MGMT_ADD_EXT_ADV_DATA_SIZE as the fixed header size.  The handler\nthen uses cp->adv_data_len and cp->scan_rsp_len to validate and copy\ncp->data, but it never checks that those bytes are part of the mgmt\ncommand payload.\nA short command can therefore make add_ext_adv_data() pass an\nout-of-bounds pointer into tlv_data_is_valid().  If the bytes beyond\nthe command buffer are addressable, they can also be copied into the\nadvertising instance as scan response data, where the caller can read\nthem back via MGMT_OP_GET_ADV_INSTANCE.  The trigger requires\nCAP_NET_ADMIN in the initial user namespace; KASAN reports an 8-byte\nslab-out-of-bounds read.\nReject commands whose length does not match the fixed header plus both\nadvertising data lengths before parsing cp->data.",
    "metrics": {
      "cvssV2_0": {},
      "cvssV3_0": {},
      "cvssV3_1": {
        "score": 5.5,
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
      },
      "threat_severity": "Moderate"
    },
    "redhat_repo_path": "2026/CVE-2026-64126.json",
    "references": [
      "https://lore.kernel.org/linux-cve-announce/2026071925-CVE-2026-64126-a17e@gregkh/T",
      "https://nvd.nist.gov/vuln/detail/CVE-2026-64126",
      "https://www.cve.org/CVERecord?id=CVE-2026-64126"
    ],
    "title": "kernel: Bluetooth: MGMT: validate Add Extended Advertising Data length",
    "updated": "2026-07-19T00:00:00+00:00",
    "vendors": [],
    "weaknesses": [
      "CWE-805"
    ]
  }
}