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

From: John W. Linville
Date: Fri May 18 2007 - 14:03:21 EST


First, please send all wireless patches to
linux-wireless@xxxxxxxxxxxxxxx, 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@xxxxxxxxx>
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@xxxxxxxxxxxxx
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