New Spectre Fixes - Root Cause of Reboot Issue Identified ?

Intel has advised OEMs, cloud service providers, system manufacturers, software vendors and end users stop deployment of current firmware updates that fix the same vulnerability (CVE-2017-5715).

Intel’s update on the situation

And now Intel instructed all customers to hold off on deploying current versions of the firmware updates, “as they may introduce higher than expected reboots and other unpredictable system behavior.”

“We have now identified the root cause for Broadwell and Haswell platforms, and made good progress in developing a solution to address it. Over the weekend, we began rolling out an early version of the updated solution to industry partners for testing, and we will make a final release available once that testing has been completed,” Navin Shenoy, Intel VP and general manager of the Data Center Group at Intel Corporation, announced on Monday.

Intel also provided a handy table that shows which microcode updates should be avoided, depending on the underlying processors.