mac80211: add length check in ieee80211_is_robust_mgmt_frame()
A few places weren't checking that the frame passed to the
function actually has enough data even though the function
clearly documents it must have a payload byte. Make this
safer by changing the function to take an skb and checking
the length inside. The old version is preserved for now as
the rtl* drivers use it and don't have a correct skb.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 4aed45c..b8600e3 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -494,7 +494,7 @@
hdrlen = ieee80211_hdrlen(hdr->frame_control);
if (!ieee80211_is_data(hdr->frame_control) &&
- !ieee80211_is_robust_mgmt_frame(hdr))
+ !ieee80211_is_robust_mgmt_frame(skb))
return RX_CONTINUE;
data_len = skb->len - hdrlen - IEEE80211_CCMP_HDR_LEN -