Commit 93bbaab4 authored by Sven Eckelmann's avatar Sven Eckelmann Committed by Simon Wunderlich

batman-adv: Reject unicast packet with zero/mcast dst address

An unicast batman-adv packet cannot be transmitted to a multicast or zero
mac address. So reject incoming packets which still have these classes of
addresses as destination mac address in the outer ethernet header.
Signed-off-by: default avatarSven Eckelmann <sven@narfation.org>
Signed-off-by: default avatarSimon Wunderlich <sw@simonwunderlich.de>
parent 92eef520
......@@ -364,8 +364,8 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
ethhdr = eth_hdr(skb);
/* packet with unicast indication but broadcast recipient */
if (is_broadcast_ether_addr(ethhdr->h_dest))
/* packet with unicast indication but non-unicast recipient */
if (!is_valid_ether_addr(ethhdr->h_dest))
goto free_skb;
/* packet with broadcast/multicast sender address */
......@@ -462,8 +462,8 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv,
ethhdr = eth_hdr(skb);
/* packet with unicast indication but broadcast recipient */
if (is_broadcast_ether_addr(ethhdr->h_dest))
/* packet with unicast indication but non-unicast recipient */
if (!is_valid_ether_addr(ethhdr->h_dest))
return -EBADR;
/* packet with broadcast/multicast sender address */
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment