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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160406191929.GA12088@pd.tnic>
Date:	Wed, 6 Apr 2016 21:19:29 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Yves-Alexis Perez <corsac@...ian.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	"kernel-hardening@...ts.openwall.com" 
	<kernel-hardening@...ts.openwall.com>,
	Kees Cook <keescook@...omium.org>, Emrah Demir <ed@...sec.com>,
	Dan Rosenberg <dan.j.rosenberg@...il.com>,
	Dave Jones <davej@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [kernel-hardening] Re: [PATCH] KERNEL: resource: Fix bug on
 leakage in /proc/iomem file

On Wed, Apr 06, 2016 at 09:11:07PM +0200, Yves-Alexis Perez wrote:
> On mer., 2016-04-06 at 12:02 -0700, Linus Torvalds wrote:
> > So yeah, maybe swap partitions are still more common than I thought.
> > And I didn't even consider the possibility that people would hibernate
> > a desktop like you do.
> 
> To be fair, it's *my* use case, because suspend won't work but I'm lazy and
> don't like to reopen everything I was doing, but still have to shut the
> machine down once in a while (or to save power).

I'm doing exactly the same thing with my workstation:

echo 3 > /proc/sys/vm/drop_caches
echo "shutdown" > /sys/power/disk
echo "disk" > /sys/power/state

*exactly* because I don't want to restart everything. :-)

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.