According to AMD, this glitch might mess with the CPU’s cache line write-back behavior, courtesy of the misbehaving INVD instruction. Translation: it could lead to a potential loss of guest virtual machine memory integrity. Not the kind of party trick you want from your CPU, right?
The good news? AMD’s on it. For EPYC Processors third-gen, a fix is in the works – a hot-loadable microcode patch and a firmware image update. They’re urging users to hop on this solution ASAP, promising it won’t cramp your CPU’s style performance-wise.
