CVE-2024-27060 thunderbolt: Fix NULL pointer dereference in tb_port_update_credits()

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Fix NULL pointer dereference in tbportupdatecredits Olliver reported that his system crashes when plugging in Thunderbolt 1 device: BUG: kernel NULL pointer dereference, address: 0000000000000020 PF: supervisor read...