linux-kernel - Re: [PATCH] pinctrl: samsung: Suppress unbinding to prevent theoretical attacks

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Message-ID: <CACRpkdYdo5XsJvb9GTYph7P=u31treiDX6HZGbG_AGzW5hp1HQ@mail.gmail.com>
Date:	Thu, 26 May 2016 11:08:42 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	Tomasz Figa <tomasz.figa@...il.com>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Kukjin Kim <kgene@...nel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: Re: [PATCH] pinctrl: samsung: Suppress unbinding to prevent
 theoretical attacks

On Tue, May 17, 2016 at 8:02 AM, Krzysztof Kozlowski
<k.kozlowski@...sung.com> wrote:

> Although unbinding a pinctrl driver requires root privileges but it
> still might be used theoretically in certain attacks (by triggering NULL
> pointer exception or memory corruption).

Patch applied with Javier's review tag.

I suspect this kind of patch should be done to a few
GPIO controller :/

Yours,
Linus Walleij