linux-kernel - [ 034/109] mac80211: fail authentication when AP denied authentication

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Message-Id: <20120807222046.088009383@linuxfoundation.org>
Date:	Tue,  7 Aug 2012 15:34:53 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Eliad Peller <eliad@...ery.com>,
	Johannes Berg <johannes@...solutions.net>,
	"John W. Linville" <linville@...driver.com>
Subject: [ 034/109] mac80211: fail authentication when AP denied authentication

From: Greg KH <gregkh@...uxfoundation.org>

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eliad Peller <eliad@...ery.com>

commit dac211ec10d268b9d09000093a9fa2ac1773894f upstream.

ieee80211_rx_mgmt_auth() doesn't handle denied authentication
properly - it authenticates the station and waits for association
(for 5 seconds) instead of failing the authentication.

Fix it by destroying auth_data and bailing out instead.

Signed-off-by: Eliad Peller <eliad@...ery.com>
Acked-by: Johannes Berg <johannes@...solutions.net>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/mac80211/mlme.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1813,7 +1813,8 @@ ieee80211_rx_mgmt_auth(struct ieee80211_
 	if (status_code != WLAN_STATUS_SUCCESS) {
 		printk(KERN_DEBUG "%s: %pM denied authentication (status %d)\n",
 		       sdata->name, mgmt->sa, status_code);
-		goto out;
+		ieee80211_destroy_auth_data(sdata, false);
+		return RX_MGMT_CFG80211_RX_AUTH;
 	}
 
 	switch (ifmgd->auth_data->algorithm) {
@@ -1835,7 +1836,6 @@ ieee80211_rx_mgmt_auth(struct ieee80211_
 	}
 
 	printk(KERN_DEBUG "%s: authenticated\n", sdata->name);
- out:
 	ifmgd->auth_data->done = true;
 	ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
 	run_again(ifmgd, ifmgd->auth_data->timeout);


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