Ian Cutress - writing at eponymous AnandTech - expertly reported AMD Ryzen security flaws yesterday, via an announcement by security research firm CTS-Labs. While this appears to be bad news, let's leave the exact fix criteria to AMD, of which, has not responded (as of the writing of this post) to the annoucement from CTS-Labs (reportedly, the time-frame was a 24-hour notice, rather than the industry standard notification of 90 Calendar Days...). Stay tuned.
"CTS-Labs’ claims revolve around AMD’s Secure Processor and Promontory Chipset, and fall into four main categories, which CTS-Labs has named for maximum effect. Each category has sub-sections within." via Ian Cutress, reporting at AnandTech.
Updated 2018/03/15 0831 - Dan Goodin at Ars Technica provides additional insightful reportage, and this from Motherboard scribe Lorenzo Franceschi-Bicchierai detailing the indicators of fraud and subterfuge within (and without) the report.