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netfilter: SYNPROXY target: restrict to INPUT/FORWARD

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

Reported-by: Nicki P. <xastx@gmx.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Patrick McHardy 2013-12-08 16:52:31 +00:00 committed by Pablo Neira Ayuso
parent 8afdd99a13
commit f01b3926ee
2 changed files with 2 additions and 0 deletions
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1
net/ipv4/netfilter/ipt_SYNPROXY.c
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@ -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,

1
net/ipv6/netfilter/ip6t_SYNPROXY.c
View File

@ -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,