Intel recently announced that it has completed the repair of Spectre Ghost and Meltdown vulnerabilities for all CPU processors released during the past five years, and that future products will be immune from the hardware.
On April 2, Intel quietly updated the CPU microcode update instructions, clearly gave up the development of bug fixes for a series of old processors, because they are too old.
These abandoned processors include:Bloomfield, Clarksfiled, Harpertown, Jasper Forest, Penryn, SoFIA 3GR, Wolfdale, Yorkfield.
If you are not familiar with these codes, it does not matter.Most of them are 45nm process products from 2007-2009, including the Core 3D, Core 2 and Xeon, Pentium, and Celeron.
SoFIA 3GR is rather special. It is Intel's mobile processor developed for 3G smartphones, which is the Atom x3-C3000 series, but there is almost no product adoption.
Prior to this, the microcode update status of these products was plannig or Pre-Beta, and now they all become stopped.
Intel stated that after in-depth research on the microarchitecture and microcode performance of these products, it was decided that microcode will not be updated for them. The reasons include:
- Microarchitecture properties make it impossible to fully incorporate some features of the Ghost Vulgate variant 2 patch
- Extremely limited system software support
- Most of these products have been abandoned, and there is basically no possibility of being attacked