RE: [PATCH] mm: optionally disable brk()

[David Laight]

From: David Hildenbrand
> Sent: 05 October 2020 10:55
...
> > If hardening and compatibility are seen as tradeoffs, perhaps there
> > could be a top level config choice (CONFIG_HARDENING_TRADEOFF) for this.
> > It would have options
> > - "compatibility" (default) to gear questions for maximum compatibility,
> > deselecting any hardening options which reduce compatibility
> > - "hardening" to gear questions for maximum hardening, deselecting any
> > compatibility options which reduce hardening
> > - "none/manual": ask all questions like before
> 
> I think the general direction is to avoid an exploding set of config
> options. So if there isn't a *real* demand, I guess gluing this to a
> single option ("CONFIG_SECURITY_HARDENING") might be good enough.

Wouldn't that be better achieved by run-time clobbering
of the syscall vectors?

	David

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