diff --git a/core/mac/src/dph/dph_hash_table.c b/core/mac/src/dph/dph_hash_table.c
index 783f35383a0f..71e24d967185 100644
--- a/core/mac/src/dph/dph_hash_table.c
+++ b/core/mac/src/dph/dph_hash_table.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2012-2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -198,6 +199,7 @@ tpDphHashNode dph_init_sta_state(struct mac_context *mac, tSirMacAddr staAddr,
 	sta->is_disassoc_deauth_in_progress = 0;
 	sta->sta_deletion_in_progress = false;
 	sta->valid = 1;
+	sta->is_key_installed = 0;
 	return sta;
 }
 
diff --git a/core/mac/src/pe/lim/lim_process_auth_frame.c b/core/mac/src/pe/lim/lim_process_auth_frame.c
index 607555e8c5e2..15a733a5c762 100644
--- a/core/mac/src/pe/lim/lim_process_auth_frame.c
+++ b/core/mac/src/pe/lim/lim_process_auth_frame.c
@@ -1332,6 +1332,14 @@ lim_process_auth_frame(struct mac_context *mac_ctx, uint8_t *rx_pkt_info,
 		return;
 	}
 
+	/* Duplicate Auth frame from peer */
+	auth_node = lim_search_pre_auth_list(mac_ctx, mac_hdr->sa);
+	if (auth_node && (auth_node->seq_num == curr_seq_num)) {
+		pe_err("Received an already processed auth frame with seq_num : %d",
+		       curr_seq_num);
+		return;
+	}
+
 	/* save seq number and mac_addr in pe_session */
 	pe_session->prev_auth_seq_num = curr_seq_num;
 	qdf_mem_copy(pe_session->prev_auth_mac_addr, mac_hdr->sa, ETH_ALEN);
@@ -1463,7 +1471,6 @@ lim_process_auth_frame(struct mac_context *mac_ctx, uint8_t *rx_pkt_info,
 		 * Authentication frame3 and there is a context for requesting
 		 * STA. If not, reject with unspecified failure status code
 		 */
-		auth_node = lim_search_pre_auth_list(mac_ctx, mac_hdr->sa);
 		if (!auth_node) {
 			pe_err("rx Auth frame with no preauth ctx with WEP bit set "
 				QDF_MAC_ADDR_FMT,