Comment 4 for bug 1830883

That does appear to be the latest firmware. There's some information about debugging and reporting bugs here:

https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/debugging

There are some things there to try, but given that this appears to be a firmware crash I don't know that they will be of much help. Your best bet is to follow the instructions there to report a bug for the developers at Intel to look at.