The ominous "All Linux systems and even more ARE AT RISK BECAUSE OF WHAT I FOUND!1!!" story is like a hurricane that reduces itself to a mild storm after landfall, IMHO ;) #SarcasmButOnlyHalf My employer, #RedHat, explains it at the links I put in https://social.wildeboer.net/@jwildeboer/113206098049389657 TL;DR it's CUPS, disable cups-browsed on your machines (if it is even running) and expect fixes soon. I will make a hot cocoa and have a wonderful night of sleep :)