These new vulnerabilities affect all major CPU vendors just not AMD/Intel but also ARM and IBM / POWER.
We have not identified any AMD x86 products susceptible to the Variant 3a vulnerability in our analysis to-date.
When it comes to ARM, sitation is also not so clear so that we can speak in general:
https://developer.arm.com/support/ar...-vulnerability
At least they provide easy to read table :
Processor | Variant 1 | Variant 2 | Variant 3 | Variant 3a | Variant 4 |
Cortex-R7 | Yes* | Yes* | No | No | No |
Cortex-R8 | Yes* | Yes* | No | No | No |
Cortex-A8 | Yes | Yes | No | No | No |
Cortex-A9 | Yes | Yes | No | No | No |
Cortex-A12 | Yes | Yes | No | No | No |
Cortex-A15 | Yes | Yes | No | Yes | No |
Cortex-A17 | Yes | Yes | No | No | No |
Cortex-A57 | Yes | Yes | No | Yes | Yes |
Cortex-A72 | Yes | Yes | No | Yes | Yes |
Cortex-A73 | Yes | Yes | No | No | Yes |
Cortex-A75 | Yes | Yes | Yes | No | Yes |
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