linux-kernel - Re: [2.6 patch] drivers/net/wireless/libertas/rx.c: fix use-after-free

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Message-ID: <20070518174623.GA3492@tuxdriver.com>
Date:	Fri, 18 May 2007 13:46:23 -0400
From:	"John W. Linville" <linville@...driver.com>
To:	Eugene Teo <eteo@...hat.com>
Cc:	linux-kernel@...r.kernel.org, jeff@...zik.org,
	linux-wireless@...r.kernel.org, Florin Malita <fmalita@...il.com>
Subject: Re: [2.6 patch] drivers/net/wireless/libertas/rx.c: fix use-after-free

First, please send all wireless patches to
linux-wireless@...r.kernel.org, and be sure to CC me as well...thanks!

On Sat, May 19, 2007 at 12:50:31AM +0800, Eugene Teo wrote:
> libertas_upload_rx_packet() calls netif_rx() before returning, and it always return 0.
> Also within libertas_upload_rx_packet(), it will initialize skb->protocol anyways.
> 
> Spotted by the Coverity checker.

A nearly identical patch was posted by Florin Malita <fmalita@...il.com>
to netdev (also the wrong list) on Wednesday evening.

>  done:
>         LEAVE();
> 
> -       skb->protocol = __constant_htons(0x0019);       /* ETH_P_80211_RAW */
> -

Except for this part...is this intentional?

John
-- 
John W. Linville
linville@...driver.com
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