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authorPablo Neira Ayuso <pablo@netfilter.org>2022-07-05 10:26:15 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2022-07-09 09:55:43 +0200
commit7a847c00eeba9744353ecdfad253143b9115678a (patch)
tree334ddb11e408b95bc8f44e8daac2284abce96aa3 /net/netfilter/xt_NFQUEUE.c
parent0ed8f619b412b52360ccdfaf997223ccd9319569 (diff)
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netfilter: nf_log: incorrect offset to network header
NFPROTO_ARP is expecting to find the ARP header at the network offset. In the particular case of ARP, HTYPE= field shows the initial bytes of the ethernet header destination MAC address. netdev out: IN= OUT=bridge0 MACSRC=c2:76:e5:71:e1:de MACDST=36:b0:4a:e2:72:ea MACPROTO=0806 ARP HTYPE=14000 PTYPE=0x4ae2 OPCODE=49782 NFPROTO_NETDEV egress hook is also expecting to find the IP headers at the network offset. Fixes: 35b9395104d5 ("netfilter: add generic ARP packet logger") Reported-by: Tom Yan <tom.ty89@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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