CPU security vulnerabilities pose broad-spectrum issues
Meltdown and Spectre side-channel vulnerabilities threaten most computer microprocessors and operating systems—including portable devices, and potentially industrial control systems exposed to the Internet.
As this is an actual hardware problem related to CPU architecture design, the only real solution is to replace affected CPU chips with corrected architectures. Estimates in the popular news are suggesting that as many as 1.5 billion computers are affected worldwide.