Meltdown and Spectre are big security issues, and they affect almost every computer. For Linux (and Ubuntu) there are already a lot of updates available to fight Meltdown and Spectre. You only need to install them.

Meltdown and Spectre are big security issues, and they affect almost every computer. For Linux (and Ubuntu) there are already a lot of updates available to fight Meltdown and Spectre. You only need to install them.
One of the scariest realities of the Meltdown and Spectre vulnerabilities is just how widespread they are. Use these simple tools to see how your Linux PC is affected and what you can do.
While Microsoft has released emergency updates to patch Meltdown and Spectre bugs. considering the complexity of the bugs, your Windows system may or may not be fully patched.