It’s a proprietary enterprise security product so I think it’ll be difficult to get information until they give a proper post-mortem (if they do so). Here’s hoping someone can put it all together though.
Regardless, the kernel driver ought to have been statically analysed to detect this kind of memory hazard, or written in a language that prevents this class of bugs altogether. This is a priority of the US government right now, but CrowdStrike doesn’t seem to have got the memo.