Re: [PATCH 3/7] procfs privacy: misc. entries

[Dave Jones]

On Mon, Apr 18, 2005 at 08:46:52PM +0200, Lorenzo Hernández García-Hierro wrote:
 > This patch changes the permissions of the following procfs entries to
 > restrict non-root users from accessing them:
 > 
 >  - /proc/devices 
 >  - /proc/cmdline
 >  - /proc/version
 >  - /proc/uptime
 >  - /proc/cpuinfo

This is utterly absurd. You can find out anything thats in /proc/cpuinfo
by calling cpuid instructions yourself.
Please enlighten me as to what security gains we achieve
by not allowing users to see this ?

Restricting lots of the other files are equally absurd.

I'd also be very surprised if various random bits of userspace
broke subtley due to this nonsense.

		Dave

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