batman-adv: Check skb size before using encapsulated ETH+VLAN header

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The encapsulated ethernet and VLAN header may be outside the received
ethernet frame. Thus the skb buffer size has to be checked before it can be
parsed to find out if it encapsulates another batman-adv packet.

Fixes: 420193573f ("batman-adv: softif bridge loop avoidance")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <a@unstable.cc>

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Sven Eckelmann 2016-02-26 17:56:13 +01:00 • committed by Antonio Quartulli

parent 5f44abd041

commit c78296665c

1 changed files with 6 additions and 2 deletions

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net/batman-adv/soft-interface.c

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