Linux Kernel Bluetooth Command Synchronization Memory Leak Vulnerability

A memory leak vulnerability has been addressed in the Linux kernel's Bluetooth subsystem. The issue arises in the command synchronization process, specifically within the 'hci_cmd_sync_queue_once' function. When this function encounters an error, it fails to invoke the necessary cleanup callback, leading to unfreed references and memory. This vulnerability affects the stable version of the Linux kernel.

Impact

The vulnerability could result in a memory leak, causing increased memory usage and potentially leading to exhaustion of system resources.