diff options
| author | Ming Yen Hsieh <mingyen.hsieh@mediatek.com> | 2025-09-04 06:06:48 +0300 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2026-03-23 12:21:25 +0300 |
| commit | 83ae3a18ba957257b4c406273d2da2caeea2b439 (patch) | |
| tree | 90c96211dcda3c60fa895593a43ed0d2fd1edd1c | |
| parent | 34163942195410372fb138bea806c9b34e2f5257 (diff) | |
| download | linux-83ae3a18ba957257b4c406273d2da2caeea2b439.tar.xz | |
wifi: mt76: mt7925: prevent NULL pointer dereference in mt7925_tx_check_aggr()
Move the NULL check for 'sta' before dereferencing it to prevent a
possible crash.
Fixes: 44eb173bdd4f ("wifi: mt76: mt7925: add link handling in mt7925_txwi_free")
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Link: https://patch.msgid.link/20250904030649.655436-4-mingyen.hsieh@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7925/mac.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mac.c b/drivers/net/wireless/mediatek/mt76/mt7925/mac.c index 63e58c177d65..33cd5e85a31d 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mac.c @@ -846,11 +846,14 @@ static void mt7925_tx_check_aggr(struct ieee80211_sta *sta, struct sk_buff *skb, bool is_8023; u16 fc, tid; + if (!sta) + return; + link_sta = rcu_dereference(sta->link[wcid->link_id]); if (!link_sta) return; - if (!sta || !(link_sta->ht_cap.ht_supported || link_sta->he_cap.has_he)) + if (!(link_sta->ht_cap.ht_supported || link_sta->he_cap.has_he)) return; tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK; |