netdev - Re: [PATCH] hamradio/yam: fix info leak in ioctl

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Message-Id: <20131216.201127.533912619440960142.davem@davemloft.net>
Date:	Mon, 16 Dec 2013 20:11:27 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	speiro@....upv.es
Cc:	linux-kernel@...r.kernel.org, security@...nel.org,
	linux-hams@...r.kernel.org, netdev@...r.kernel.org, jpr@...bb.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] hamradio/yam: fix info leak in ioctl

From: Salva Peiró <speiro@....upv.es>
Date: Fri, 13 Dec 2013 08:46:07 +0100

> The yam_ioctl() code fails to initialise the cmd field
> of the struct yamdrv_ioctl_cfg. Add an explicit memset(0)
> before filling the structure to avoid the 4-byte info leak.
> 
> Signed-off-by: Salva Peiró <speiro@....upv.es>

Put this into the SIOCYAMGCFG case statement, which is where the
problem actually exists.
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