netdev - Re: [PATCH] net: wimax/i2400m: fix NULL-deref at probe

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Message-Id: <20170313.122857.396618777046322808.davem@davemloft.net>
Date:   Mon, 13 Mar 2017 12:28:57 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     johan@...nel.org
Cc:     inaky.perez-gonzalez@...el.com, linux-wimax@...el.com,
        netdev@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, inaky@...ux.intel.com
Subject: Re: [PATCH] net: wimax/i2400m: fix NULL-deref at probe

From: Johan Hovold <johan@...nel.org>
Date: Mon, 13 Mar 2017 13:42:03 +0100

> Make sure to check the number of endpoints to avoid dereferencing a
> NULL-pointer or accessing memory beyond the endpoint array should a
> malicious device lack the expected endpoints.
> 
> The endpoints are specifically dereferenced in the i2400m_bootrom_init
> path during probe (e.g. in i2400mu_tx_bulk_out).
> 
> Fixes: f398e4240fce ("i2400m/USB: probe/disconnect, dev init/shutdown
> and reset backends")
> Cc: Inaky Perez-Gonzalez <inaky@...ux.intel.com>
> 
> Signed-off-by: Johan Hovold <johan@...nel.org>

Applied.