Zenbleed: an AMD Zen 2 speculative vulnerability

Posted Jul 26, 2023 13:39 UTC (Wed) by MarcB (subscriber, #101804)
In reply to: Zenbleed: an AMD Zen 2 speculative vulnerability by paulj
Parent article: Zenbleed: an AMD Zen 2 speculative vulnerability

They do NOT cover all affected CPUs.

The microcode applies to - and fixes - our EPYC servers, but it does not apply to the equally affected Ryzen PRO 3xxx we use on small servers.

Also the PoC works scaringly well. This vulnerability is on the level of Meltdown, i.e. much easier to exploit and providing a far higher leak rate rate than most Spectre attacks.