linux-kernel - Re: [PATCH] KERNEL: resource: Fix bug on leakage in /proc/iomem file

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Message-ID: <5e5e7c7ced7bede343530ed1447d7453@abdsec.com>
Date:	Wed, 06 Apr 2016 13:05:56 -0500
From:	ed@...sec.com
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Dan Rosenberg <dan.j.rosenberg@...il.com>,
	Dave Jones <davej@...hat.com>,
	Kees Cook <keescook@...omium.org>,
	Kernel Hardening <kernel-hardening@...ts.openwall.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] KERNEL: resource: Fix bug on leakage in /proc/iomem file

First, I wrote your attached patch, but then I thought zeroing other 
/proc/iomem values would be better. So I changed it.

Most distros don't use KASLR, but they use kptr_restrict. Without KASLR, 
kptr_restirct most likely useless. As you said these things should be 
done long ago

         Emrah Demir