--- zzzz-none-000/linux-4.9.276/net/mac80211/key.c	2021-07-20 14:21:16.000000000 +0000
+++ falcon-5530-750/linux-4.9.276/net/mac80211/key.c	2023-04-05 08:19:02.000000000 +0000
@@ -688,6 +688,21 @@
 	key->sdata = sdata;
 	key->sta = sta;
 
+	/*
+	 * Silently accept key re-installation without really installing the
+	 * new version of the key to avoid nonce reuse or replay issues.
+	 */
+	if (old_key && key->conf.keylen == old_key->conf.keylen &&
+	    !memcmp(key->conf.key, old_key->conf.key, key->conf.keylen)) {
+		ieee80211_key_free_unused(key);
+		ret = 0;
+		goto out;
+	}
+
+	key->local = sdata->local;
+	key->sdata = sdata;
+	key->sta = sta;
+
 	increment_tailroom_need_count(sdata);
 
 	ieee80211_key_replace(sdata, sta, pairwise, old_key, key);
@@ -750,6 +765,7 @@
 		ieee80211_key_enable_hw_accel(key);
 	}
 
+out:
 	mutex_unlock(&sdata->local->key_mtx);
 }