From: Sven Eckelmann <s...@narfation.org>
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: Sven Eckelmann <s...@narfation.org>
Signed-off-by: Simon Wunderlich <s...@simonwunderlich.de>
---
net/batman-adv/routing.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 4f034df..6713bdf 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -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 */
--
2.10.1
