[geeks] How?

[Lionel Peterson]

(I am posting this to geeks, where I think this topic is fair game, I hope
that's OK.)

Intel, AMD and ARM have been caught up in a security vulnerability, much
discussed in the tech and mainstream media, where a rouge process could dump
Protected Kernel space by executing a certain instruction designed to move
protected memory into a register despite the instruction being invalid, based
on process authorization.

Intel is committing to providing updates by the end of January to CPUs
released in the last 5 years. Great. How? Can Intel CPU microcode really be
changed after the part is in a system?

https://redmondmag.com/blogs/scott-bekker/2018/01/intel-patch-chips-in-last-5
-years.aspx

Seriously, how are they accomplishing this update? Anyone know?

Lionel