CVE-2026-77684 Bluetooth Classic HFP Hands-Free: TX buffer leak on RFCOMM disconnect leads to permanent Bluetooth denial of service

The Bluetooth Classic Hands-Free Profile HF role in subsys/bluetooth/host/classic/hfphf.c does not release the AT command buffers that are still queued on hf-txpending when the RFCOMM DLC goes down. hfphfdisconnected only cancelled the work items and cleared hf-acl, and no other code path ever...

CVE-2026-77684 Bluetooth Classic HFP Hands-Free: TX buffer leak on RFCOMM disconnect leads to permanent Bluetooth denial of service

The Bluetooth Classic Hands-Free Profile HF role in subsys/bluetooth/host/classic/hfphf.c does not release the AT command buffers that are still queued on hf-txpending when the RFCOMM DLC goes down. hfphfdisconnected only cancelled the work items and cleared hf-acl, and no other code path ever...

CVE-2026-77684 Bluetooth Classic HFP Hands-Free: TX buffer leak on RFCOMM disconnect leads to permanent Bluetooth denial of service

The Bluetooth Classic Hands-Free Profile HF role in subsys/bluetooth/host/classic/hfphf.c does not release the AT command buffers that are still queued on hf-txpending when the RFCOMM DLC goes down. hfphfdisconnected only cancelled the work items and cleared hf-acl, and no other code path ever...

CVE-2026-77684

The Bluetooth Classic Hands-Free Profile (HFP) HF role in Zephyr RTOS (subsys/bluetooth/host/classic/hfp_hf.c) contains a memory leak where AT command buffers are not released when the RFCOMM DLC goes down. This causes a permanent leak from the fixed hf_pool . If the pool is exhausted, subsequent...