The following commit has been merged in the master branch: commit 92eef520d77d106d9ea06b17294c5079edefe95d Author: Sven Eckelmann sven@narfation.org Date: Sat Aug 6 17:04:22 2016 +0200

batman-adv: Disallow zero and mcast src address for mgmt frames

The routing check for management frames is validating the source mac address in the outer ethernet header. It rejects every source mac address which is a broadcast address. But it also has to reject the zero-mac address and multicast mac addresses.

Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Simon Wunderlich sw@simonwunderlich.de

diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index c02897b..4f034df 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -196,8 +196,8 @@ bool batadv_check_management_packet(struct sk_buff *skb, if (!is_broadcast_ether_addr(ethhdr->h_dest)) return false;

- /* packet with broadcast sender address */ - if (is_broadcast_ether_addr(ethhdr->h_source)) + /* packet with invalid sender address */ + if (!is_valid_ether_addr(ethhdr->h_source)) return false;

/* create a copy of the skb, if needed, to modify it. */