6.5-stable review patch. If anyone has any objections, please let me know.
------------------
From: Bo Jiao <Bo.Jiao@xxxxxxxxxxxx>
[ Upstream commit d6a2f91741d9f43b31cb16c82da37f35117a6d1c ]
Fix potential memory leak when setting beacon and inband discovery
commands.
Fixes: e57b7901469f ("mt76: add mac80211 driver for MT7915 PCIe-based chipsets")
Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices")
Signed-off-by: Bo Jiao <Bo.Jiao@xxxxxxxxxxxx>
Signed-off-by: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 10 ++++++++--
drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 10 ++++++++--
2 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 4278eacf43845..411157e93865b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -1922,8 +1922,10 @@ mt7915_mcu_add_inband_discov(struct mt7915_dev *dev, struct ieee80211_vif *vif,
skb = ieee80211_get_unsol_bcast_probe_resp_tmpl(hw, vif);
}
- if (!skb)
+ if (!skb) {
+ dev_kfree_skb(rskb);
return -EINVAL;
+ }
info = IEEE80211_SKB_CB(skb);
info->control.vif = vif;
@@ -1935,6 +1937,7 @@ mt7915_mcu_add_inband_discov(struct mt7915_dev *dev, struct ieee80211_vif *vif,
if (skb->len > MT7915_MAX_BEACON_SIZE) {
dev_err(dev->mt76.dev, "inband discovery size limit exceed\n");
+ dev_kfree_skb(rskb);
dev_kfree_skb(skb);
return -EINVAL;
}
@@ -1991,11 +1994,14 @@ int mt7915_mcu_add_beacon(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
goto out;
skb = ieee80211_beacon_get_template(hw, vif, &offs, 0);
- if (!skb)
+ if (!skb) {
+ dev_kfree_skb(rskb);
return -EINVAL;
+ }
if (skb->len > MT7915_MAX_BEACON_SIZE) {
dev_err(dev->mt76.dev, "Bcn size limit exceed\n");
+ dev_kfree_skb(rskb);
dev_kfree_skb(skb);
return -EINVAL;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index ac06450a79512..60cc3fdca9463 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -1942,11 +1942,14 @@ int mt7996_mcu_add_beacon(struct ieee80211_hw *hw,
return PTR_ERR(rskb);
skb = ieee80211_beacon_get_template(hw, vif, &offs, 0);
- if (!skb)
+ if (!skb) {
+ dev_kfree_skb(rskb);
return -EINVAL;
+ }
if (skb->len > MT7996_MAX_BEACON_SIZE) {
dev_err(dev->mt76.dev, "Bcn size limit exceed\n");
+ dev_kfree_skb(rskb);
dev_kfree_skb(skb);
return -EINVAL;
}
@@ -2006,11 +2009,14 @@ int mt7996_mcu_beacon_inband_discov(struct mt7996_dev *dev,
skb = ieee80211_get_unsol_bcast_probe_resp_tmpl(hw, vif);
}
- if (!skb)
+ if (!skb) {
+ dev_kfree_skb(rskb);
return -EINVAL;
+ }
if (skb->len > MT7996_MAX_BEACON_SIZE) {
dev_err(dev->mt76.dev, "inband discovery size limit exceed\n");
+ dev_kfree_skb(rskb);
dev_kfree_skb(skb);
return -EINVAL;
}
--
2.42.0
