In the Linux kernel, the following vulnerability has been resolved: Bluetooth: qca: fix NULL-deref on non-serdev setup Qualcomm ROME controllers can be registered from the Bluetooth line discipline and in this case the HCI UART serdev pointer is NULL. Add the missing sanity check to prevent a NULL-pointer dereference when setup() is called for a non-serdev controller.
https://git.kernel.org/stable/c/bec4d4c6fa5c6526409f582e4f31144e20c86c21
https://git.kernel.org/stable/c/7ddb9de6af0f1c71147785b12fd7c8ec3f06cc86
https://git.kernel.org/stable/c/67459f1a707aae6d590454de07956c2752e21ea4