From: Eric Dumazet <edumazet@google.com>
Date: Wed, 11 Dec 2013 16:10:05 +0000 (-0800)
Subject: udp: ipv4: fix potential use after free in udp_v4_early_demux()
X-Git-Tag: v3.13-rc4~3^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=610438b74496b2986a9025f8e23c134cb638e338;p=pandora-kernel.git

udp: ipv4: fix potential use after free in udp_v4_early_demux()

pskb_may_pull() can reallocate skb->head, we need to move the
initialization of iph and uh pointers after its call.

Fixes: 421b3885bf6d ("udp: ipv4: Add udp early demux")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Shawn Bohrer <sbohrer@rgmadvisors.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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