diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-09-09 12:42:53 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-09-12 18:52:32 +0200 |
| commit | 71212c9b04eba76faa4dca26ccd1552d6bb300c1 (patch) | |
| tree | c94e136ed7989fd72d416cd506bcca99b5549472 /net/ipv6 | |
| parent | netfilter: nf_tables_bridge: use nft_set_pktinfo_ipv{4, 6}_validate (diff) | |
| download | linux-71212c9b04eba76faa4dca26ccd1552d6bb300c1.tar.xz linux-71212c9b04eba76faa4dca26ccd1552d6bb300c1.zip | |
netfilter: nf_tables: don't drop IPv6 packets that cannot parse transport
This is overly conservative and not flexible at all, so better let them
go through and let the filtering policy decide what to do with them. We
use skb_header_pointer() all over the place so we would just fail to
match when trying to access fields from malformed traffic.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/netfilter/nf_tables_ipv6.c | 4 | ||||
| -rw-r--r-- | net/ipv6/netfilter/nft_chain_route_ipv6.c | 4 |
2 files changed, 2 insertions, 6 deletions
diff --git a/net/ipv6/netfilter/nf_tables_ipv6.c b/net/ipv6/netfilter/nf_tables_ipv6.c index 30b22f4dff55..05d05926962a 100644 --- a/net/ipv6/netfilter/nf_tables_ipv6.c +++ b/net/ipv6/netfilter/nf_tables_ipv6.c @@ -22,9 +22,7 @@ static unsigned int nft_do_chain_ipv6(void *priv, { struct nft_pktinfo pkt; - /* malformed packet, drop it */ - if (nft_set_pktinfo_ipv6(&pkt, skb, state) < 0) - return NF_DROP; + nft_set_pktinfo_ipv6(&pkt, skb, state); return nft_do_chain(&pkt, priv); } diff --git a/net/ipv6/netfilter/nft_chain_route_ipv6.c b/net/ipv6/netfilter/nft_chain_route_ipv6.c index 71d995ff3108..01eb0f658366 100644 --- a/net/ipv6/netfilter/nft_chain_route_ipv6.c +++ b/net/ipv6/netfilter/nft_chain_route_ipv6.c @@ -32,9 +32,7 @@ static unsigned int nf_route_table_hook(void *priv, u_int8_t hop_limit; u32 mark, flowlabel; - /* malformed packet, drop it */ - if (nft_set_pktinfo_ipv6(&pkt, skb, state) < 0) - return NF_DROP; + nft_set_pktinfo_ipv6(&pkt, skb, state); /* save source/dest address, mark, hoplimit, flowlabel, priority */ memcpy(&saddr, &ipv6_hdr(skb)->saddr, sizeof(saddr)); |