# HG changeset patch
# User Sebastien Jodogne <s.jodogne@gmail.com>
# Date 1774174729 -3600
# Node ID 344064be379dd30dda027d7ae41caa44d73aebfb
# Parent  be4a4f1ccaf484f0ef048d5db68bbb8d296abb8e
added security check in ChunkedBuffer for 32bit architectures

diff -r be4a4f1ccaf4 -r 344064be379d OrthancFramework/Sources/ChunkedBuffer.cpp
--- a/OrthancFramework/Sources/ChunkedBuffer.cpp	Sun Mar 22 11:05:50 2026 +0100
+++ b/OrthancFramework/Sources/ChunkedBuffer.cpp	Sun Mar 22 11:18:49 2026 +0100
@@ -49,6 +49,15 @@
   void ChunkedBuffer::AddChunkInternal(const void* chunkData,
                                        size_t chunkSize)
   {
+    {
+      uint64_t resultingSize = static_cast<uint64_t>(numBytes_) + static_cast<uint64_t>(chunkSize);
+      if (static_cast<uint64_t>(static_cast<size_t>(resultingSize)) != resultingSize)
+      {
+        // Guard for 32bit architectures
+        throw OrthancException(ErrorCode_NotEnoughMemory);
+      }
+    }
+
     if (chunkSize == 0)
     {
       return;