commit: 353d09c6ceedc1cb0c54fe5002c0ca80b6ee6e4f
From: Christian Lamparter <[email protected]>
Date: Sat, 7 Jul 2012 15:07:13 +0200
Subject: mac80211: fix read outside array bounds

ieee802_1d_to_ac is defined as a const int[8],
but the tid parameter has a range from 0 to 15.

Cc: [email protected]
Signed-off-by: Christian Lamparter <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
---
 net/mac80211/tx.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index e453212..85cf32d 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2733,7 +2733,7 @@ EXPORT_SYMBOL(ieee80211_get_buffered_bc);
 void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
                          struct sk_buff *skb, int tid)
 {
-       int ac = ieee802_1d_to_ac[tid];
+       int ac = ieee802_1d_to_ac[tid & 7];
 
        skb_set_mac_header(skb, 0);
        skb_set_network_header(skb, 0);
-- 
1.7.3.4
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