From 7f5c005cb148fe91362e14a1f78517b8b37f9abd Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Wed, 7 Mar 2007 22:34:45 +0100 Subject: [PATCH] nfnetlink_log: fix crash on bridged packet [NETFILTER]: nfnetlink_log: fix crash on bridged packet physoutdev is only set on purely bridged packet, when nfnetlink_log is used in the OUTPUT/FORWARD/POSTROUTING hooks on packets forwarded from or to a bridge it crashes when trying to dereference skb->nf_bridge->physoutdev. Reported by Holger Eitzenberger Signed-off-by: Patrick McHardy Signed-off-by: Greg Kroah-Hartman --- net/netfilter/nfnetlink_log.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index 53c0ed2803f1..690b173bdee7 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -491,7 +491,7 @@ __build_packet_message(struct nfulnl_instance *inst, * for physical device (when called from ipv4) */ NFA_PUT(inst->skb, NFULA_IFINDEX_OUTDEV, sizeof(tmp_uint), &tmp_uint); - if (skb->nf_bridge) { + if (skb->nf_bridge && skb->nf_bridge->physoutdev) { tmp_uint = htonl(skb->nf_bridge->physoutdev->ifindex); NFA_PUT(inst->skb, NFULA_IFINDEX_PHYSOUTDEV, -- 2.39.5