diff mbox series

mac80211: drop robust management frames from unknown TA

Message ID 20190612100445.13067-1-johannes@sipsolutions.net (mailing list archive)
State Accepted
Delegated to: Johannes Berg
Headers show
Series mac80211: drop robust management frames from unknown TA | expand

Commit Message

Johannes Berg June 12, 2019, 10:04 a.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

When receiving a robust management frame, drop it if we don't have
rx->sta since then we don't have a security association and thus
couldn't possibly validate the frame.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/rx.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 25577ede2986..fd3740000e87 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3831,6 +3831,8 @@  static bool ieee80211_accept_frame(struct ieee80211_rx_data *rx)
 	case NL80211_IFTYPE_STATION:
 		if (!bssid && !sdata->u.mgd.use_4addr)
 			return false;
+		if (ieee80211_is_robust_mgmt_frame(skb) && !rx->sta)
+			return false;
 		if (multicast)
 			return true;
 		return ether_addr_equal(sdata->vif.addr, hdr->addr1);