linux-kernel - Re: [patch] intel_scu_ipcutil: underflow in scu_reg

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Message-ID: <20160130174239.GC9269@malice.jf.intel.com>
Date:	Sat, 30 Jan 2016 09:42:39 -0800
From:	Darren Hart <dvhart@...radead.org>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	Sreedhara DS <sreedhara.ds@...el.com>,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [patch] intel_scu_ipcutil: underflow in scu_reg_access()

On Tue, Jan 26, 2016 at 12:24:25PM +0300, Dan Carpenter wrote:
> "count" is controlled by the user and it can be negative.  Let's prevent
> that by making it unsigned.  You have to have CAP_SYS_RAWIO to call this
> function so the bug is not as serious as it could be.
> 
> Fixes: 5369c02d951a ('intel_scu_ipc: Utility driver for intel scu ipc')
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Queued to fixes for 4.5-rc1 as well as stable.

Thanks Dan,


-- 
Darren Hart
Intel Open Source Technology Center