From a9dc5060bf3a32ac3dad472f15416054b92dc5b5 Mon Sep 17 00:00:00 2001 From: Eyal Shapira Date: Wed, 31 Dec 2014 17:58:23 +0200 Subject: [PATCH] iwlwifi: mvm: fix out of bounds access to tid_to_mac80211_ac When tid_tspec was set to IWL_TID_NON_QOS (8) this led to an out of bounds access to the tid_to_mac80211_ac array whose size is 7. Fix this. Signed-off-by: Eyal Shapira Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/tx.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/tx.c b/drivers/net/wireless/iwlwifi/mvm/tx.c index 4f15d9decc81..4333306ccdee 100644 --- a/drivers/net/wireless/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/iwlwifi/mvm/tx.c @@ -108,8 +108,12 @@ void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb, tx_flags &= ~TX_CMD_FLG_SEQ_CTL; } - /* tid_tspec will default to 0 = BE when QOS isn't enabled */ - ac = tid_to_mac80211_ac[tx_cmd->tid_tspec]; + /* Default to 0 (BE) when tid_spec is set to IWL_TID_NON_QOS */ + if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT) + ac = tid_to_mac80211_ac[tx_cmd->tid_tspec]; + else + ac = tid_to_mac80211_ac[0]; + tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) << TX_CMD_FLG_BT_PRIO_POS; -- 2.39.2