linux-kernel - Re: [PATCH] fix infoleak in wilc_wfi

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Message-ID: <20160503230629.GB15078@kroah.com>
Date:	Tue, 3 May 2016 16:06:29 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Kangjie Lu <kangjielu@...il.com>
Cc:	johnny.kim@...el.com, austin.shin@...el.com, chris.park@...el.com,
	tony.cho@...el.com, glen.lee@...el.com,
	linux-kernel@...r.kernel.org, taesoo@...ech.edu, insu@...ech.edu,
	csong84@...ech.edu, Kangjie Lu <kjlu@...ech.edu>
Subject: Re: [PATCH] fix infoleak in wilc_wfi_cfgoperations

On Tue, May 03, 2016 at 06:17:28PM -0400, Kangjie Lu wrote:
> "mac" is an array allocated in stack without being initialized,
> and will be sent out via "nla_put". The dump_station() is supposed
> to initialize the mac address; otherwise, sensitive data in kernel
> stack will be leaked. To fix this, initialize it with memset or
> fill it with meaningful mac address.

"or"?  You just set it to zero, why not fix this correctly and put the
real address here?

thanks,

greg k-h