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[NETFILTER]: nf_conntrack_ipv6: fix incorrect classification of IPv6 fragments as ESTABLISHED 

The individual fragments of a packet reassembled by conntrack have the
conntrack reference from the reassembled packet attached, but nfctinfo
is not copied. This leaves it initialized to 0, which unfortunately is
the value of IP_CT_ESTABLISHED.

The result is that all IPv6 fragments are tracked as ESTABLISHED,
allowing them to bypass a usual ruleset which accepts ESTABLISHED
packets early.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-03-06 20:24:18 -08:00 committed by David S. Miller
parent 455921451a
commit dd63006b8f
1 changed files with 1 additions and 0 deletions
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net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
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@ -257,6 +257,7 @@ static unsigned int ipv6_conntrack_in(unsigned int hooknum,
}
nf_conntrack_get(reasm->nfct);
(*pskb)->nfct = reasm->nfct;
(*pskb)->nfctinfo = reasm->nfctinfo;
return NF_ACCEPT;
}