wifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power

After 'commit ba45841ca5eb ("wifi: mt76: mt76x02: simplify struct mt76x02_rate_power")', mt76x02 relies on ht[0-7] rate_power data for vht mcs{0,7}, while it uses vth[0-1] rate_power for vht mcs {8,9}. Fix a possible out-of-bound access in mt76x0_phy_get_target_power routine. Fixes: ba45841ca5eb ("wifi: mt76: mt76x02: simplify struct mt76x02_rate_power") Signed-off-by: Lorenzo Bianconi <[email protected]> Signed-off-by: Felix Fietkau <[email protected]>
mpeleshenko · Dec 10, 2022 · eeb6949 · eeb6949
1 parent 5185bba
commit eeb6949
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/mt76x0/phy.c b/mt76x0/phy.c
@@ -645,7 +645,12 @@ mt76x0_phy_get_target_power(struct mt76x02_dev *dev, u8 tx_mode,
 		if (tx_rate > 9)
 			return -EINVAL;
 
-		*target_power = cur_power + dev->rate_power.vht[tx_rate];
+		*target_power = cur_power;
+		if (tx_rate > 7)
+			*target_power += dev->rate_power.vht[tx_rate - 8];
+		else
+			*target_power += dev->rate_power.ht[tx_rate];
+
 		*target_pa_power = mt76x0_phy_get_rf_pa_mode(dev, 1, tx_rate);
 		break;
 	default: