Currently on sale on GoG as well:

https://www.gog.com/en/game/return_to_castle_wolfenstein

Debian Trixie is on 6.12. I would expect many Debian users to still be on Bookworm though, which is reported as “6.1 series”. Not sure if those would be affected. Most other distros will be on newer kernels than Debian.

https://www.debian.org/releases/trixie/release-notes/whats-new.en.html

I don’t have any machines still running Bookworm so I can’t check for myself.

Edit: I am a ding dong home user and don’t even use Linux for work (unfortunately). No idea how this affects entities larger than individuals like me