void usbip_pack_pdu(struct usbip_header *pdu, struct urb *urb, int cmd,
		    int pack)
{
	switch (cmd) {
	case USBIP_CMD_SUBMIT:
		usbip_pack_cmd_submit(pdu, urb, pack);
		break;
	case USBIP_RET_SUBMIT:
		usbip_pack_ret_submit(pdu, urb, pack);
		break;
	default:
		/* NOT REACHED */
		pr_err("unknown command\n");
		break;
	}
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.