If you use Intel or Nvidia graphics: you are not affected by this to begin with! Intel’s graphics driver does not use Mesa for VA-API; instead, it uses Intel’s own proprietary intel-media-driver (which you can get from RPM Fusion). Nvidia’s proprietary driver does not use Mesa at all.
If I already have the RPMFusion repo enabled on my machine, will this package automatically update on my machine? I also have an AMD GPU and I’m wondering what I will have to do to get this. I noticed an update come through for me today that mentioned H.264, but I wasn’t sure if that was the fix that’s been in the works.
You will have to opt-in by installing the mesa-freeworld package. It seems they still are deciding if it’s going to replace the distrib package or offer an alternative. (I’d be perfectly fine with replacing…)