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batman-adv: Disallow regular interface as mesh device

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When trying to associate a net_device with another net_device which
already exists, batman-adv assumes that this interface is a fully
initialized batman mesh interface without checking it. The behaviour
when accessing data behind netdev_priv of a random net_device is
undefined and potentially dangerous.

Reported-by: Linus Lüssing <linus.luessing@ascom.ch>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Sven Eckelmann
2011-03-04 21:36:41 +00:00
committed by Marek Lindner
parent 7cefb149a6
commit e44d8fe2b5
3 changed files with 36 additions and 12 deletions
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1
net/batman-adv/soft-interface.h
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@@ -31,5 +31,6 @@ void interface_rx(struct net_device *soft_iface,
int hdr_size);
struct net_device *softif_create(char *name);
void softif_destroy(struct net_device *soft_iface);
int softif_is_valid(struct net_device *net_dev);
#endif /* _NET_BATMAN_ADV_SOFT_INTERFACE_H_ */