From 6f4d674090737847fa6d7e929b0453914dee8ef4 Mon Sep 17 00:00:00 2001
From: Ivey <jivey9@stl.gtri.org>
Date: Tue, 19 Nov 2024 12:25:16 -0500
Subject: [PATCH] lte: Check iterator before dereferencing

---
 src/lte/model/epc-pgw-application.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/lte/model/epc-pgw-application.cc b/src/lte/model/epc-pgw-application.cc
index 673bf09be..f96bb23cd 100644
--- a/src/lte/model/epc-pgw-application.cc
+++ b/src/lte/model/epc-pgw-application.cc
@@ -48,8 +48,11 @@ EpcPgwApplication::UeInfo::RemoveBearer(uint8_t bearerId)
 {
     NS_LOG_FUNCTION(this << (uint16_t)bearerId);
     auto it = m_teidByBearerIdMap.find(bearerId);
-    m_tftClassifier.Delete(it->second); // delete tft
-    m_teidByBearerIdMap.erase(bearerId);
+    if (it != m_teidByBearerIdMap.end())
+    {
+        m_tftClassifier.Delete(it->second); // delete tft
+        m_teidByBearerIdMap.erase(bearerId);
+    }
 }
 
 uint32_t