mac80211: verify that skb data is present
authorJohannes Berg <johannes.berg@intel.com>
Thu, 25 Oct 2012 22:36:40 +0000 (00:36 +0200)
committerJohannes Berg <johannes.berg@intel.com>
Fri, 26 Oct 2012 20:52:42 +0000 (22:52 +0200)
commit9b395bc3be1cebf0144a127c7e67d56dbdac0930
tree9cbe0d8566b890f43cd8d9f884f8b78104775f29
parent4a4f1a5808c8bb0b72a4f6e5904c53fb8c9cd966
mac80211: verify that skb data is present

A number of places in the mesh code don't check that
the frame data is present and in the skb header when
trying to access. Add those checks and the necessary
pskb_may_pull() calls. This prevents accessing data
that doesn't actually exist.

To do this, export ieee80211_get_mesh_hdrlen() to be
able to use it in mac80211.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
include/net/cfg80211.h
net/mac80211/rx.c
net/wireless/util.c