From c445c434226a5d0d899d9761b19b6fa9ca6244fc Mon Sep 17 00:00:00 2001
From: aled-ua <bugbuster.cc@gmail.com>
Date: Tue, 24 Dec 2024 07:56:22 +0000
Subject: [PATCH] Fix vuln OSV-2023-1150

---
 Packet++/src/PacketUtils.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Packet++/src/PacketUtils.cpp b/Packet++/src/PacketUtils.cpp
index fda7a9bc40..950320198f 100644
--- a/Packet++/src/PacketUtils.cpp
+++ b/Packet++/src/PacketUtils.cpp
@@ -17,6 +17,11 @@ namespace pcpp
 			uint32_t localSum = 0;
 
 			// vec len is in bytes
+			if (vec[i].len > sizeof(vec[i].buffer))
+			{
+				PCPP_LOG_ERROR("Buffer overflow detected: vec[i].len exceeds buffer size");
+				return 0; // Return an invalid checksum
+			}
 			for (size_t j = 0; j < vec[i].len / 2; j++)
 			{
 				PCPP_LOG_DEBUG("Value to add = 0x" << std::uppercase << std::hex << vec[i].buffer[j]);