linux-kernel - Re: [PATCH v3 3/9] bus: mhi: core: Add range check for channel id received in event ring

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Date:   Thu, 30 Apr 2020 08:26:49 -0600
From:   Jeffrey Hugo <jhugo@...eaurora.org>
To:     Bhaumik Bhatt <bbhatt@...eaurora.org>, mani@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        hemantk@...eaurora.org
Subject: Re: [PATCH v3 3/9] bus: mhi: core: Add range check for channel id
 received in event ring

On 4/29/2020 2:52 PM, Bhaumik Bhatt wrote:
> From: Hemant Kumar <hemantk@...eaurora.org>
> 
> MHI data completion handler function reads channel id from event
> ring element. Value is under the control of MHI devices and can be
> any value between 0 and 255. In order to prevent out of bound access
> add a bound check against the max channel supported by controller
> and skip processing of that event ring element.
> 
> Signed-off-by: Hemant Kumar <hemantk@...eaurora.org>
> Signed-off-by: Bhaumik Bhatt <bbhatt@...eaurora.org>
> ---

Reviewed-by: Jeffrey Hugo <jhugo@...eaurora.org>

-- 
Jeffrey Hugo
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.