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Commit f01b3926 authored by Patrick McHardy's avatar Patrick McHardy Committed by Pablo Neira Ayuso
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netfilter: SYNPROXY target: restrict to INPUT/FORWARD 



Fix a crash in synproxy_send_tcp() when using the SYNPROXY target in the
PREROUTING chain caused by missing routing information.

Reported-by: default avatarNicki P. <xastx@gmx.de>
Signed-off-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 8afdd99a

net/ipv4/netfilter/ipt_SYNPROXY.c

+1 −0
Original line number Diff line number Diff line
@@ -423,6 +423,7 @@ static void synproxy_tg4_destroy(const struct xt_tgdtor_param *par) 
static struct xt_target synproxy_tg4_reg __read_mostly = {

	.name		= "SYNPROXY",

	.family		= NFPROTO_IPV4,

	.hooks		= (1 << NF_INET_LOCAL_IN) | (1 << NF_INET_FORWARD),

	.target		= synproxy_tg4,

	.targetsize	= sizeof(struct xt_synproxy_info),

	.checkentry	= synproxy_tg4_check,

net/ipv6/netfilter/ip6t_SYNPROXY.c

+1 −0
Original line number Diff line number Diff line
@@ -446,6 +446,7 @@ static void synproxy_tg6_destroy(const struct xt_tgdtor_param *par) 
static struct xt_target synproxy_tg6_reg __read_mostly = {

	.name		= "SYNPROXY",

	.family		= NFPROTO_IPV6,

	.hooks		= (1 << NF_INET_LOCAL_IN) | (1 << NF_INET_FORWARD),

	.target		= synproxy_tg6,

	.targetsize	= sizeof(struct xt_synproxy_info),

	.checkentry	= synproxy_tg6_check,