From 3f82313693ce503547073183f2dbcf8cd529a7fe Mon Sep 17 00:00:00 2001
From: fireknight-hJ <1290208782@qq.com>
Date: Sun, 3 Dec 2023 22:17:32 +0800
Subject: [PATCH] fix vulnerability in BLE cordio

---
 .../source/cordio/stack_adaptation/hci_tr.c          | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/connectivity/FEATURE_BLE/source/cordio/stack_adaptation/hci_tr.c b/connectivity/FEATURE_BLE/source/cordio/stack_adaptation/hci_tr.c
index 9245499fa19..81e9bbd4ed5 100644
--- a/connectivity/FEATURE_BLE/source/cordio/stack_adaptation/hci_tr.c
+++ b/connectivity/FEATURE_BLE/source/cordio/stack_adaptation/hci_tr.c
@@ -170,8 +170,18 @@ void hciTrSerialRxIncoming(uint8_t *pBuf, uint8_t len)
           hdrLen = HCI_EVT_HDR_LEN;
           break;
         default:
-          /* invalid packet type */
+          /**
+           * invalid packet type 
+           * 
+           * fix: Simply employing WSF_ASSERT in the event of 
+           * an "invalid packet type" is not reasonable. 
+           * Instead, it is advisable to discard this data packet, 
+           * exit the packet processing function, 
+           * and adjust the stateRx back to HCI_RX_STATE_IDLE.
+          */
+          stateRx = HCI_RX_STATE_IDLE;
           WSF_ASSERT(0);
+          return;
           break;
       }