From: Zilin Guan Date: Thu, 13 Nov 2025 06:24:15 +0000 (+0000) Subject: mt76: mt7615: Fix memory leak in mt7615_mcu_wtbl_sta_add() X-Git-Tag: v6.19-rc1~170^2~33^2~5^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=53d1548612670aa8b5d89745116cc33d9d172863;p=thirdparty%2Fkernel%2Flinux.git mt76: mt7615: Fix memory leak in mt7615_mcu_wtbl_sta_add() In mt7615_mcu_wtbl_sta_add(), an skb sskb is allocated. If the subsequent call to mt76_connac_mcu_alloc_wtbl_req() fails, the function returns an error without freeing sskb, leading to a memory leak. Fix this by calling dev_kfree_skb() on sskb in the error handling path to ensure it is properly released. Fixes: 99c457d902cf9 ("mt76: mt7615: move mt7615_mcu_set_bmc to mt7615_mcu_ops") Signed-off-by: Zilin Guan Acked-by: Lorenzo Bianconi Link: https://patch.msgid.link/20251113062415.103611-1-zilin@seu.edu.cn Signed-off-by: Felix Fietkau --- diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c index 52bbedda672bf..fc0054f8bd602 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c @@ -874,8 +874,10 @@ mt7615_mcu_wtbl_sta_add(struct mt7615_phy *phy, struct ieee80211_vif *vif, wtbl_hdr = mt76_connac_mcu_alloc_wtbl_req(&dev->mt76, &msta->wcid, WTBL_RESET_AND_SET, NULL, &wskb); - if (IS_ERR(wtbl_hdr)) + if (IS_ERR(wtbl_hdr)) { + dev_kfree_skb(sskb); return PTR_ERR(wtbl_hdr); + } if (enable) { mt76_connac_mcu_wtbl_generic_tlv(&dev->mt76, wskb, vif, sta,