From: Herbert Xu <[email protected]>
Date: Tue, 4 Aug 2015 15:42:47 +0800
> The commit 738ac1ebb96d02e0d23bc320302a6ea94c612dec ("net: Clone
> skb before setting peeked flag") introduced a use-after-free bug
> in skb_recv_datagram. This is because skb_set_peeked may create
> a new skb and free the existing one. As it stands the caller will
> continue to use the old freed skb.
>
> This patch fixes it by making skb_set_peeked return the new skb
> (or the old one if unchanged).
>
> Fixes: 738ac1ebb96d ("net: Clone skb before setting peeked flag")
> Reported-by: Brenden Blanco <[email protected]>
> Signed-off-by: Herbert Xu <[email protected]>
Applied, and since the commit this is fixing is queued up for -stable
I'll of course queue this up too.
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