CVE-2023-53393

CVE-2023-53393 affects the Linux kernel RDMA mlx5 subsystem. The root cause is incorrect port_num handling in mlx5_ib_get_hw_stats() for device (port_num = 0), with downstream code assuming port_num >= 1, which can trigger a page fault (oops) as shown in the provided trace. The fix sets port_n...