AMD-SB-7005 “Return Address Security Bulletin” outlines this new speculative side channel attack affecting recent EPYC and Ryzen processors.
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.
Maybe CPU manufactures shouldn’t add hacks to their CPUs for more performance, and therefore more $$$'s. If they were held liable this’d never happen.
Do you know why Zen 2 and Zen 1 don’t have this issue? Because they didn’t come up with the hack they used to increase performance (and therefore $$$'s) back then because they knew it’d leak like crazy. This time it didn’t seem like they cared.