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Date: Mon, 25 Jul 2016 21:40:42 -0700 (PDT) From: David Miller <davem@...emloft.net> To: daniel@...earbox.net Cc: netdev@...r.kernel.org, willemdebruijn.kernel@...il.com, alexei.starovoitov@...il.com, willemb@...gle.com Subject: Re: [PATCH net-next] udp: use sk_filter_trim_cap for udp{,6}_queue_rcv_skb From: Daniel Borkmann <daniel@...earbox.net> Date: Mon, 25 Jul 2016 18:06:12 +0200 > After a612769774a3 ("udp: prevent bugcheck if filter truncates packet > too much"), there followed various other fixes for similar cases such > as f4979fcea7fd ("rose: limit sk_filter trim to payload"). > > Latter introduced a new helper sk_filter_trim_cap(), where we can pass > the trim limit directly to the socket filter handling. Make use of it > here as well with sizeof(struct udphdr) as lower cap limit and drop the > extra skb->len test in UDP's input path. > > Signed-off-by: Daniel Borkmann <daniel@...earbox.net> Applied.
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