Re: [PATCH] sysctl: add config to make randomize_va_space RO

From: David Hildenbrand
Date: Fri May 05 2023 - 03:37:00 EST


On 04.05.23 23:30, Michael McCracken wrote:
Add config RO_RANDMAP_SYSCTL to set the mode of the randomize_va_space
sysctl to 0444 to disallow all runtime changes. This will prevent
accidental changing of this value by a root service.

The config is disabled by default to avoid surprises.

Can you elaborate why we care about "accidental changing of this value by a root service"?

We cannot really stop root from doing a lot of stupid things (e.g., erase the root fs), so why do we particularly care here?

--
Thanks,

David / dhildenb