Chromium Ungoogled and this bug

Apparently Chrome is vulnerable to this attack.
Some PDF on it
Slashdot

I know it's a low priority yet. Does anyone know if the Chromium-ungoogled is hit as well? Or Brave?

They mention that GPUs from all SIX major suppliers are vulnerable. I'm struggling to think of six major GPU suppliers

1. Nvidia
2. AMD
3. Intel (pause for laughter)
4. Apple
5. Arm (Mali GPUs)??? Surely that's a stretch.
6. ???