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| author | Sven Eckelmann <sven@narfation.org> | 2016-08-06 17:04:22 +0200 |
|---|---|---|
| committer | Simon Wunderlich <sw@simonwunderlich.de> | 2016-11-08 19:02:35 +0100 |
| commit | 92eef520d77d106d9ea06b17294c5079edefe95d (patch) | |
| tree | 0df79f8290008f0d36b6186a66e921fd88dcdd60 /net/batman-adv | |
| parent | 9f75c8e1c8cc868645f34152df5ffd3fe97d1620 (diff) | |
| download | linux-92eef520d77d106d9ea06b17294c5079edefe95d.tar.gz linux-92eef520d77d106d9ea06b17294c5079edefe95d.tar.bz2 linux-92eef520d77d106d9ea06b17294c5079edefe95d.zip | |
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>
Diffstat (limited to 'net/batman-adv')
| -rw-r--r-- | net/batman-adv/routing.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index c02897ba9b8b..4f034df09a5a 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. */ |