linux-kernel - Re: [V2 PATCH] net: sock: validate data_len before allocating skb in sock_alloc_send

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Message-Id: <20120531.182145.119572313886189417.davem@davemloft.net>
Date:	Thu, 31 May 2012 18:21:45 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	jasowang@...hat.com
Cc:	netdev@...r.kernel.org, edumazet@...gle.com, mst@...hat.com,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [V2 PATCH] net: sock: validate data_len before allocating skb
 in sock_alloc_send_pskb()

From: Jason Wang <jasowang@...hat.com>
Date: Thu, 31 May 2012 15:18:10 +0800

> We need to validate the number of pages consumed by data_len, otherwise frags
> array could be overflowed by userspace. So this patch validate data_len and
> return -EMSGSIZE when data_len may occupies more frags than MAX_SKB_FRAGS.
> 
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Applied and queued up for -stable.

Please do not add explicit stable CC:'s to networking patches, I queue
appropriate changes up myself, and submit them only when I feel that
the change has had sufficient exposure and testing in Linus's tree.
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