openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Sven Eckelmann 2016-08-06 17:04:22 +02:00 committed by Simon Wunderlich
parent 9f75c8e1c8
commit 92eef520d7
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/batman-adv/routing.c
View File

@ -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. */