This is a note to let you know that I've just added the patch titled
iwlwifi: mvm: validate tid and sta_id in ba_notif
to the 3.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iwlwifi-mvm-validate-tid-and-sta_id-in-ba_notif.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 2cee4762c528a9bd2cdff793197bf591a2196c11 Mon Sep 17 00:00:00 2001
From: Eyal Shapira <eyal@xxxxxxxxxx>
Date: Fri, 16 Jan 2015 11:09:30 +0200
Subject: iwlwifi: mvm: validate tid and sta_id in ba_notif
From: Eyal Shapira <eyal@xxxxxxxxxx>
commit 2cee4762c528a9bd2cdff793197bf591a2196c11 upstream.
These are coming from the FW and are used to access arrays.
Bad values can cause an out of bounds access so discard
such ba_notifs and warn.
Signed-off-by: Eyal Shapira <eyalx.shapira@xxxxxxxxx>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/iwlwifi/mvm/tx.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/net/wireless/iwlwifi/mvm/tx.c
+++ b/drivers/net/wireless/iwlwifi/mvm/tx.c
@@ -930,6 +930,11 @@ int iwl_mvm_rx_ba_notif(struct iwl_mvm *
sta_id = ba_notif->sta_id;
tid = ba_notif->tid;
+ if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT ||
+ tid >= IWL_MAX_TID_COUNT,
+ "sta_id %d tid %d", sta_id, tid))
+ return 0;
+
rcu_read_lock();
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
Patches currently in stable-queue which might be from eyal@xxxxxxxxxx are
queue-3.19/iwlwifi-mvm-validate-tid-and-sta_id-in-ba_notif.patch
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