Commit ec2ebc1c authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Felix Fietkau
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mt76: mt7921: fix possible NULL pointer dereference in mt7921_mac_write_txwi 



Fix a possible NULL pointer deference issue in mt7921_mac_write_txwi
routine if vif is NULL.

Fixes: 33920b2b ("mt76: add support for setting mcast rate")
Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent d4f3d1c4

drivers/net/wireless/mediatek/mt76/mt7921/mac.c

+1 −1
Original line number Diff line number Diff line
@@ -981,7 +981,7 @@ void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi, 
		mt7921_mac_write_txwi_80211(dev, txwi, skb, key);



	if (txwi[2] & cpu_to_le32(MT_TXD2_FIX_RATE)) {

		int rateidx = ffs(vif->bss_conf.basic_rates) - 1;

		int rateidx = vif ? ffs(vif->bss_conf.basic_rates) - 1 : 0;

		u16 rate, mode;



		/* hardware won't add HTC for mgmt/ctrl frame */