CVE-2026-19740

The Zephyr software Bluetooth LE Controller contains a vulnerability in its Link Layer Control Procedure (LLCP) implementation. Specifically, the functions llcp_lp_pu_rx() and llcp_rp_pu_rx() in subsys/bluetooth/controller/ll_sw/ull_llcp_phy.c fail to release a retained receive node when processi...

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...

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...

CVE-2026-19740

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...

PT-2026-110227

Name of the Vulnerable Software and Affected Versions Zephyr versions 3.4.0 through 3.7.x Description The Link Layer Control Procedure LLCP implementation of the Bluetooth LE Controller fails to release a retained receive node when processing invalid Protocol Data Units PDUs during PHY Update,...

PT-2025-44933

Name of the Vulnerable Software and Affected Versions Bluetooth affected versions not specified Description A temporary denial-of-service condition can occur when a remote device sends an invalid connection request during a Bluetooth Low Energy LE connectable scan. This issue is related to an...