"Zenbleed" bug affects all Zen 2-based Ryzen, Threadripper, and EPYC CPUs.
The bug allows attackers to swipe data from a CPU’s registers. […] the exploit doesn’t require physical hardware access and can be triggered by loading JavaScript on a malicious website.
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This is shaping up to be a real mess, a ton of companies are looking at whole fleet upgrades if they don’t wanna wait around for patches.
This is why you have especially generous bug bounty programs folks. :(