linux-kernel - [PATCH 3.19.y-ckt 100/155] iwlwifi: dvm: fix D3 firmware PN programming

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Message-Id: <1447370309-357-101-git-send-email-kamal@canonical.com>
Date:	Thu, 12 Nov 2015 15:17:34 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Johannes Berg <johannes.berg@...el.com>,
	Luca Coelho <luciano.coelho@...el.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 100/155] iwlwifi: dvm: fix D3 firmware PN programming

3.19.8-ckt10 -stable review patch.  If anyone has any objections, please let me know.

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

From: Johannes Berg <johannes.berg@...el.com>

commit 5bd166872d8f99f156fac191299d24f828bb2348 upstream.

The code to send the RX PN data (for each TID) to the firmware
has a devastating bug: it overwrites the data for TID 0 with
all the TID data, leaving the remaining TIDs zeroed. This will
allow replays to actually be accepted by the firmware, which
could allow waking up the system.

Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Luca Coelho <luciano.coelho@...el.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/net/wireless/iwlwifi/dvm/lib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/iwlwifi/dvm/lib.c b/drivers/net/wireless/iwlwifi/dvm/lib.c
index 1d2223d..e7d3566 100644
--- a/drivers/net/wireless/iwlwifi/dvm/lib.c
+++ b/drivers/net/wireless/iwlwifi/dvm/lib.c
@@ -1022,7 +1022,7 @@ static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
 			u8 *pn = seq.ccmp.pn;
 
 			ieee80211_get_key_rx_seq(key, i, &seq);
-			aes_sc->pn = cpu_to_le64(
+			aes_sc[i].pn = cpu_to_le64(
 					(u64)pn[5] |
 					((u64)pn[4] << 8) |
 					((u64)pn[3] << 16) |
-- 
1.9.1

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