Re: [PATCH net] net/dccp: fix use-after-free in dccp_invalid_packet

[David Miller]

From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Date: Mon, 28 Nov 2016 06:26:49 -0800

> From: Eric Dumazet <edumazet@xxxxxxxxxx>
> 
> pskb_may_pull() can reallocate skb->head, we need to reload dh pointer
> in dccp_invalid_packet() or risk use after free.
> 
> Bug found by Andrey Konovalov using syzkaller.
> 
> Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
> Reported-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>

Applied and queued up for -stable, thanks Eric.