CVE-2026-19740 Bluetooth LE Controller: retained RX node leak and reachable assertion in the PHY Update procedure

The Link Layer Control Procedure LLCP implementation of the Zephyr software Bluetooth LE Controller retains the receive node that carried an accepted LLPHYUPDATEIND so that it can later be reused for the host notification when the update instant is reached llcprxnoderetain in...