Linux Kernel Bluetooth NULL Pointer Dereference Vulnerability in btbcm_get_board_name()

A vulnerability in the Linux kernel's Bluetooth component, specifically within the btbcm module, has been addressed. The issue arose because the function devm_kstrdup() could return a NULL pointer on failure, but this potential NULL value was not checked in btbcm_get_board_name(). As a result, the function could inadvertently cause a kernel NULL pointer dereference. The vulnerability has been resolved by adding a NULL check in btbcm_get_board_name() to prevent this error.

Impact

Exploitation of this vulnerability could lead to a kernel NULL pointer dereference, causing a system crash or instability.