CVE-2021-3455 Disconnecting L2CAP channel right after invalid ATT request leads freeze

Disconnecting L2CAP channel right after invalid ATT request leads freeze. Zephyr versions = 2.4.0, = 2.5.0 contain Use After Free CWE-416. For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp...