CTS Labs, a heretofore unknown Tel Aviv-based cybersecurity startup, has claimed it's found over a dozen security problems with AMD Ryzen and EPYC processors. Linus Torvalds, Linux's creator, doesnt buy it.
Torvalds, in a Google+ discussion, wrote:
"When was the last time you saw a security advisory that was basically 'if you replace the BIOS or the CPU microcode with an evil version, you might have a security problem?' Yeah."