Earlier this month, a little-known Israeli security company named CTS Labs disclosed a number of vulnerabilities that affect AMD’s Zen-based processor family. The exploits — Masterkey, Ryzenfall, Fallout, and Chimera — involve the Secure Processor found onboard Ryzen and EPYC products and the supporting Ryzen chipset.
At the time, AMD provided

Source: Hot Hardware – AMD Details Ryzen, EPYC And Chipset Mitigation Plan For Masterkey, Fallout And Ryzenfall Vulnerabilities