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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-09-09 12:42:49 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2016-09-12 18:51:57 +0200 |
| commit | beac5afa2d78605b70f40cf5ab5601ab10659c7f (patch) | |
| tree | 40a5b1783ad7fb55c9ace0b06d3d1fd4860ea130 /net/bridge | |
| parent | dbd2be0646e3239022630c426cbceefa15714bca (diff) | |
| download | linux-beac5afa2d78605b70f40cf5ab5601ab10659c7f.tar.gz | |
netfilter: nf_tables: ensure proper initialization of nft_pktinfo fields
This patch introduces nft_set_pktinfo_unspec() that ensures proper initialization all of pktinfo fields for non-IP traffic. This is used by the bridge, netdev and arp families. This new function relies on nft_set_pktinfo_proto_unspec() to set a new tprot_set field that indicates if transport protocol information is available. Remain fields are zeroed. The meta expression has been also updated to check to tprot_set in first place given that zero is a valid tprot value. Even a handcrafted packet may come with the IPPROTO_RAW (255) protocol number so we can't rely on this value as tprot unset. Reported-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/netfilter/nf_tables_bridge.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/bridge/netfilter/nf_tables_bridge.c b/net/bridge/netfilter/nf_tables_bridge.c index a78c4e2826e5..29899887163e 100644 --- a/net/bridge/netfilter/nf_tables_bridge.c +++ b/net/bridge/netfilter/nf_tables_bridge.c @@ -71,7 +71,7 @@ static inline void nft_bridge_set_pktinfo_ipv4(struct nft_pktinfo *pkt, if (nft_bridge_iphdr_validate(skb)) nft_set_pktinfo_ipv4(pkt, skb, state); else - nft_set_pktinfo(pkt, skb, state); + nft_set_pktinfo_unspec(pkt, skb, state); } static inline void nft_bridge_set_pktinfo_ipv6(struct nft_pktinfo *pkt, @@ -83,7 +83,7 @@ static inline void nft_bridge_set_pktinfo_ipv6(struct nft_pktinfo *pkt, nft_set_pktinfo_ipv6(pkt, skb, state) == 0) return; #endif - nft_set_pktinfo(pkt, skb, state); + nft_set_pktinfo_unspec(pkt, skb, state); } static unsigned int @@ -101,7 +101,7 @@ nft_do_chain_bridge(void *priv, nft_bridge_set_pktinfo_ipv6(&pkt, skb, state); break; default: - nft_set_pktinfo(&pkt, skb, state); + nft_set_pktinfo_unspec(&pkt, skb, state); break; } |