{"id":"CVE-2021-34148","details":"The Bluetooth Classic implementation in the Cypress WICED BT stack through 2.9.0 for CYW20735B1 devices does not properly handle the reception of LMP_max_slot with a greater ACL Length after completion of the LMP setup procedure, allowing attackers in radio range to trigger a denial of service (firmware crash) via a crafted LMP packet.","modified":"2026-03-14T10:59:49.374300Z","published":"2021-09-07T07:15:07.420Z","references":[{"type":"ADVISORY","url":"https://dl.packetstormsecurity.net/papers/general/braktooth.pdf"},{"type":"ADVISORY","url":"https://www.cypress.com/documentation/datasheets/cyw20735b1-single-chip-bluetooth-transceiver-wireless-input-devices"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-34148.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"2.9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}