diff --git a/mt7925/mac.c b/mt7925/mac.c
index f1f0bc9e..82eedd80 100644
--- a/mt7925/mac.c
+++ b/mt7925/mac.c
@@ -668,6 +668,7 @@ mt7925_mac_write_txwi_80211(struct mt76_dev *dev, __le32 *txwi,
 	u32 val;
 
 	if (ieee80211_is_action(fc) &&
+	    skb->len >= IEEE80211_MIN_ACTION_SIZE + 1 &&
 	    mgmt->u.action.category == WLAN_CATEGORY_BACK &&
 	    mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ)
 		tid = MT_TX_ADDBA;