$ uname -r

4.15.--generic

$ sudo apt-get install build-essential linux-source-4.15.

$ cp /usr/src/linux-source-4.15..tar.bz2 .

$ bunzip2 linux-source-4.15..tar.bz2

$ tar xf linux-source-4.15..tar

$ cd linux-source-4.15./

$ make oldconfig

$ make prepare

$ make scripts

$ cp /usr/src/linux-headers-4.15.--generic/Module.symvers .

$ make M=drivers/usb/serial

$ sudo mv /lib/modules/$(uname -r)/kernel/drivers/usb/serial/cp210x.ko /lib/modules/$(uname -r)/kernel/drivers/usb/serial/cp210x.ko.old

$ sudo cp drivers/usb/serial/cp210x.ko /lib/modules/$(uname -r)/kernel/drivers/usb/serial/

$ sudo modprobe -r cp210x

$ sudo modprobe cp210x
modprobe: ERROR: could not insert 'cp210x': Exec format error