Not Just AMD systems, ALL SYSTEMS, its luck of the lottery draw...
All I see is AMD this and that in regards to KB4056892, but many systems are affected including mine that houses an i7 5960x on a Gigabyte X99-SLI motherboard. The PC went into a boot loop. Fortunately for me I had made an Arconis backup on the 6th of January before this mess was released, so I went back, downloaded the tool to hide the update and also created a group policy windows update choosing option 2 which prevents windows from downloading updates without my consent, this only works on Windows 10 Pro. I contacted Microsoft and the representative told me that many systems are reporting similar issues across the board, so this is not an exclusive AMD problem...