linux-kernel - Re: [PATCH] lib/vsprintf: make-printk-non-secret printks all addresses as unhashed

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Message-ID: <20210204221143.GB13103@amd>
Date:   Thu, 4 Feb 2021 23:11:43 +0100
From:   Pavel Machek <pavel@....cz>
To:     Timur Tabi <timur@...nel.org>
Cc:     Steven Rostedt <rostedt@...dmis.org>,
        Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        willy@...radead.org, akpm@...ux-foundation.org,
        torvalds@...ux-foundation.org, roman.fietze@...na.com,
        keescook@...omium.org, john.ogness@...utronix.de,
        akinobu.mita@...il.com
Subject: Re: [PATCH] lib/vsprintf: make-printk-non-secret printks all
 addresses as unhashed

On Thu 2021-02-04 15:59:21, Timur Tabi wrote:
> On 2/4/21 3:49 PM, Pavel Machek wrote:
> >This machine is insecure. Yet I don't see ascii-art *** all around..
> >
> >"Kernel memory addresses are exposed, which is bad for security."
> 
> I'll use whatever wording everyone can agree on, but I really don't see much
> difference between "which may compromise security on your system" and "which
> is bad for security".  "may compromise" doesn't see any more alarmist than
> "bad".  Frankly, "bad" is a very generic term.

Well, I agree that "bad" is vague.... but original wording is simply
untrue, as printing addresses decreases robustness but can't introduce
security problem on its own.

Being alarmist is not my complaint; being untrue is.

Best regards,
								Pavel
-- 
http://www.livejournal.com/~pavelmachek

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