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this post was submitted on 27 Aug 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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You can use measured boot as part of the firmware boot process, store a hash of the known good boot files on a trusted media and compare that.
This is done with the Heads payload in Coreboot. But support is like only Thinkpads and now also soon Novacustom, Nitrokey and maybe System76 laptops.
The thing is, then you know your kernel is safe, but what about the rest? Depending on the attack vector, a system like on Android with full immutability and a recovery that verified the whole OS root partition would be safer.
But this means that you have no ability to customize, without breaking things.