Come across some news about a "major security vulnerability" affecting all Intel processors produced over the past (approx) 10 years.
Full details are not available as the circumstances surrounding the exploit are currently under embargo
Given it is at CPU level, it will affect all systems regardless of OS (Linux, Windows & MacOS)
The interesting point I found is regarding the supposed "degraded performance of up to 30%" when a bug fix/patch applied. Some early Linux patches are out already but are also reducing the performance of AMD processors despite not having the vulnerability.
I understand the basics of the vulnerability, but why the performance decrease? Does news of this vulnerability cause immediate concern to you?