The .sys files causing the issue are channel update files, they cause the top level CS driver to crash as they're invalidly formatted. It's unclear how/why Crowdstrike delivered the files and I'd pause all Crowdstrikes updates temporarily until they can explain.
This is going to turn out to be the biggest 'cyber' incident ever in terms of impact, just a spoiler, as recovery is so difficult.
CrowdStrike's shares are down 20% in pre-market.