linux-kernel - Re: [PATCH] i2c: dev: fix potential memory leak in i2cdev_ioctl

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Message-ID: <20190527185958.GB8808@kunai>
Date:   Mon, 27 May 2019 20:59:58 +0200
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Yingjoe Chen <yingjoe.chen@...iatek.com>
Cc:     Jean Delvare <khali@...ux-fr.org>, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com
Subject: Re: [PATCH] i2c: dev: fix potential memory leak in i2cdev_ioctl_rdwr

On Tue, May 07, 2019 at 10:20:32PM +0800, Yingjoe Chen wrote:
> If I2C_M_RECV_LEN check failed, msgs[i].buf allocated by memdup_user
> will not be freed. Pump index up so it will be freed.
> 
> Fixes: 838bfa6049fb ("i2c-dev: Add support for I2C_M_RECV_LEN")
> Signed-off-by: Yingjoe Chen <yingjoe.chen@...iatek.com>

Nice catch. Applied to for-current, thanks!


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