Does Linux need Intel microcode?
It is recommended to install it is a Debian package because it is much easier and faster to update it. So if you do not have it installed, you should install it. The vulnerability can only be patched (as of right now), by installing the latest version of microcode.
How do you update microcode?
Microcode updates are generally delivered along with UEFI firmware or BIOS updates. When your computer boots up, the computer’s UEFI firmware or BIOS loads the microcode onto the CPU. However, it’s also possible for operating systems like Windows or Linux to load new microcode at boot time.
Where can I find the latest Intel Microcode?
Intel regularly publishes new microcode for its products to the Intel Microcode Repository in GitHub* so any user can download it. Usually these updates are located under /lib/firmware directory. This directory contains microcodes for all available Intel CPUs, listed by CPU signature (Family-Model-Stepping).
How does the Intel Microcode boot loader work?
Intel Microcode Boot Loader is a workaround for the microcode problem on Intel-based motherboards. It updates the microcode every time the system is booted. Based on Intel BIOS Implementation Test Suite (BITS), users no longer need to modify BIOS/UEFI ROMs to stay protected from security vulnerabilities, bugs and erratas.
When do I need a microcode update for my computer?
Microcode updates can also fix bugs and other errors, without requiring complete replacement of CPU hardware. Microcode updates are generally delivered along with UEFI firmware or BIOS updates. When your computer boots up, the computer’s UEFI firmware or BIOS loads the microcode onto the CPU.
Is it possible to load new microcode at boot time?
However, it’s also possible for operating systems like Windows or Linux to load new microcode at boot time. For example, if you want to get the latest Intel microcode for your CPU to protect against Spectre and your PC manufacturer won’t release UEFI updates for your system, Microsoft has an optional Windows update you can install.