Intel DOWNFALL: vulnerability affecting AVX2 / AVX-512 with big performance implications

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AMD "INCEPTION" vulnerability on EPYC and Ryzen CPU ( Zen 3, Zen 4)

AMD has received an external report titled ‘INCEPTION’, describing a new speculative side channel attack. AMD believes ‘Inception’ is only potentially exploitable locally, such as via downloaded malware, and recommends customers employ security best practices, including running up-to-date software and malware detection tools. AMD is not aware of any exploit of ‘Inception’ outside the research environment, at this time. AMD recommends customers apply a µcode patch or BIOS update as applicable f…