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> All intel processors since the 9th generation (Coffee Lake Refresh) are affected by Branch Privilege Injection. However, we have observed predictions bypassin
by tannhaeuser 1y ago
> All intel processors since the 9th generation (Coffee Lake Refresh) are affected by Branch Privilege Injection. However, we have observed predictions bypassing the Indirect Branch Prediction Barrier (IBPB) on processors as far back as 7th generation (Kaby Lake).
From that piece of text on the blog, I don‘t quite unterstand if Kaby Lake CPUs are affected or not.
- chrisweekly 1y agoI interpret it as including Kaby Lake.
- autoexec 1y agowhich would mean that all our intel machines have been vulnerable and defenseless for the last 9 years.
- fwip 1y agoAt least some Kaby Lake CPUs are affected, but they can't say for sure that all of them are.
- lostmsu 1y agoNo, I think they are saying that they can only demonstrate exploit on Coffee Lake Refresh and later, but the issue that let them create exploit exists all the way back to Kaby Lake. So they are also probably exploitable, but this specific exploit does not target them.