[PATCH 5.17 0506/1126] mt76: mt7915: fix possible memory leak in mt7915_mcu_add_sta
From: Greg Kroah-Hartman
Date: Tue Apr 05 2022 - 04:56:29 EST
From: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
[ Upstream commit a43736cd12d82913102eb49cb56787a5553e028f ]
Free allocated skb in mt7915_mcu_add_sta routine in case of failures.
Fixes: 89bbd3730f382 ("mt76: mt7915: rework starec TLV tags")
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index b2b3b5068789..1afeb7493268 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -2399,8 +2399,10 @@ int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
}
ret = mt7915_mcu_sta_wtbl_tlv(dev, skb, vif, sta);
- if (ret)
+ if (ret) {
+ dev_kfree_skb(skb);
return ret;
+ }
if (sta && sta->ht_cap.ht_supported) {
/* starec amsdu */
@@ -2414,8 +2416,10 @@ int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
}
ret = mt7915_mcu_add_group(dev, vif, sta);
- if (ret)
+ if (ret) {
+ dev_kfree_skb(skb);
return ret;
+ }
out:
return mt76_mcu_skb_send_msg(&dev->mt76, skb,
MCU_EXT_CMD(STA_REC_UPDATE), true);
--
2.34.1