Commit d211e90e authored Mar 28, 2010 by Jouni Malinen Committed by John W. Linville Apr 06, 2010

mac80211: Fix robust management frame handling (MFP)



Commit e34e09401ee9888dd662b2fca5d607794a56daf2 incorrectly removed
use of ieee80211_has_protected() from the management frame case and in
practice, made this validation drop all Action frames when MFP is
enabled. This should have only been done for frames with Protected
field set to zero.

Signed-off-by: Jouni Malinen <j@w1.fi>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent a124f3be

net/mac80211/rx.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1419,7 +1419,8 @@ ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx)
		return 0;

		if (rx->sta && test_sta_flags(rx->sta, WLAN_STA_MFP)) {
		if (unlikely(ieee80211_is_unicast_robust_mgmt_frame(rx->skb) &&
		if (unlikely(!ieee80211_has_protected(fc) &&
		ieee80211_is_unicast_robust_mgmt_frame(rx->skb) &&
		rx->key))
		return -EACCES;
		/* BIP does not use Protected field, so need to check MMIE */

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