Re: [PATCH] power: disable hibernation if module loading is disabled

[Kees Cook]

On Fri, Mar 04, 2011 at 07:11:24PM +0300, Vasiliy Kulikov wrote:
> If /proc/sys/kernel/modules_disabled is set to 1, then nobody (even full
> root) may not read/write arbitrary kernel memory.  In spite of it,
> hibernation allows anyone with an access to either /dev/snapshot or
> /sys/power/ make the full snapshot of the system.  This snapshot may be
> freely changed and uploaded back.

Ah, yes please. I'd like to try to have ways to close all the
"intentional" arbitrary memory writing interfaces. Hooking it to
modules_disable seems as good as any other toggle. Still waiting to hear
anything on this: http://article.gmane.org/gmane.linux.acpi.devel/49471

Acked-by: Kees Cook <kees.cook@xxxxxxxxxxxxx>

-- 
Kees Cook
Ubuntu Security Team
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