Linked by Thom Holwerda on Sun 29th Oct 2017 17:44 UTC

Two weeks ago, security researchers managed to disable the Intel Management Engine, and last week, Google held a talk at the Open Source Summit (née LinuxCon) in which they unveiled their plans to completely (well, almost completely) replace every bit of code between the operating system you know about (Windows, Linux, BSD, whatever) and the bare metal x86 processor (Intel-only, for now).

With the WikiLeaks release of the vault7 material, the security of the UEFI (Unified Extensible Firmware Interface) firmware used in most PCs and laptops is once again a concern. UEFI is a proprietary and closed-source operating system, with a codebase almost as large as the Linux kernel, that runs when the system is powered on and continues to run after it boots the OS (hence its designation as a "Ring -2 hypervisor"). It is a great place to hide exploits since it never stops running, and these exploits are undetectable by kernels and programs.

Our answer to this is NERF (Non-Extensible Reduced Firmware), an open source software system developed at Google to replace almost all of UEFI firmware with a tiny Linux kernel and initramfs. The initramfs file system contains an init and command line utilities from the u-root project (, which are written in the Go language.

Both the slides from the talk and the video are available.

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Bill Shooter of Bul
Member since:

That is the exact reason why Google has the new project treble. If the bulk of the software can be updated without the hardware drivers needing to change devices can stay useful longer.

But thats oreo and beyond so maybe the nexus 5x will be a long lived device? One can dream anyways.

Reply Parent Score: 3 Member since:

and the hardware driver security holes (intentional or not) will remain there for longer.

Reply Parent Score: 2

Kochise Member since:

Since there's no firmware upgrade after a while, the holes will remains anyway. Without the system upgrade either in the old case.

Reply Parent Score: 2