Re: [PATCH 3/5] v2 seccomp_filters: Enable ftrace-based system callfiltering

[Ingo Molnar]

* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> It also gets rid of all configuration - one of the things that 
> makes most security frameworks (look at selinux, but also just 
> ACL's etc) such a crazy rats nest is the whole "set up for other 
> processes". If it's designed very much to be about just the "self" 
> process (after initialization etc), then I think that avoids pretty 
> much all the serious issues.

That's how the event filters work currently: even when inherited they 
get removed when exec-ing a setuid task, so they cannot leak into 
privileged context and cannot modify execution there.

Inheritance works when requested, covering only same-credential child 
tasks, not privileged successors.

Thanks,

	Ingo
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