Fixed a month ago upstream

https://github.com/torvalds/linux/commit/6785011f8b16abf40b1...

https://www.pwn.ai/blog/pwnescape

Additional color: per the commit, the bug was found by Paulos Yibelo, who runs PwnAI (the author of this piece), and worked on security at AWS for 4 years prior.

OP asked for a link

And honestly, how the &*DK is this ANYTHING related to firecracker?