diff options
| -rw-r--r-- | net/netfilter/nfnetlink_log.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c index 9f199f2..4e210e0 100644 --- a/net/netfilter/nfnetlink_log.c +++ b/net/netfilter/nfnetlink_log.c @@ -384,6 +384,7 @@ __build_packet_message(struct nfulnl_instance *inst, struct nfgenmsg *nfmsg; sk_buff_data_t old_tail = inst->skb->tail; struct sock *sk; + const unsigned char *hwhdrp; nlh = nlmsg_put(inst->skb, 0, 0, NFNL_SUBSYS_ULOG << 8 | NFULNL_MSG_PACKET, @@ -485,9 +486,17 @@ __build_packet_message(struct nfulnl_instance *inst, if (indev && skb_mac_header_was_set(skb)) { if (nla_put_be16(inst->skb, NFULA_HWTYPE, htons(skb->dev->type)) || nla_put_be16(inst->skb, NFULA_HWLEN, - htons(skb->dev->hard_header_len)) || - nla_put(inst->skb, NFULA_HWHEADER, skb->dev->hard_header_len, - skb_mac_header(skb))) + htons(skb->dev->hard_header_len))) + goto nla_put_failure; + + hwhdrp = skb_mac_header(skb); + + if (skb->dev->type == ARPHRD_SIT) + hwhdrp -= ETH_HLEN; + + if (hwhdrp >= skb->head && + nla_put(inst->skb, NFULA_HWHEADER, + skb->dev->hard_header_len, hwhdrp)) goto nla_put_failure; } |
