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LWN.net comments

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Escalating from root to kernel [LWN.net]
mb · 2026-06-02 · via LWN.net comments

Escalating from root to kernel

Posted Jun 1, 2026 16:18 UTC (Mon) by mb (subscriber, #50428)
In reply to: Escalating from root to kernel by farnz
Parent article: Policies for merging new filesystems

The difference is that we are talking about two different things.
You are apparently talking about Linux as a whole and I am talking about a particular instance running. For a given instance it should be possible to restrict root from being equal to kernel privileges. For some configurations we already have that today (Android probably).
For Linux as a whole that's not the case, of course. It must always be possible to opt out of that per admin choice. (or rather the other way around to opt-in to lockdown, of course)
So, it's not really disagreement, it's two different things. Both are true at the same time.