Commit 588f7d39 authored Feb 13, 2019 by Johannes Berg

mac80211: drop robust management frames from unknown TA



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.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

parent 180aa422

net/mac80211/rx.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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);

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