Reddit discussion gives some additional context (and background on Brad Spengler) here:
https://www.reddit.com/r/programming/comments/1oc38d2/ai_bro...Apparently, "all you need is [...] this: [bytes]" is the hash of an undisclosed exploit proof-of-concept. And the relationship between Spengler and Linux maintainers has been somewhat contentious for the better part of a decade: https://news.ycombinator.com/item?id=13312723
