From 6c67067c05036ea098b8de9f6b7860b68bce7568 Mon Sep 17 00:00:00 2001
From: "DESKTOP-AU32L56\\Purushothaman" <purushothaman@emdsys.com>
Date: Fri, 17 Oct 2025 13:28:34 +0530
Subject: [PATCH] code crashes when DICOM with 12 bits allocated is processed

---
 .../gdcm/Source/MediaStorageAndFileFormat/gdcmRAWCodec.cxx  | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Modules/ThirdParty/GDCM/src/gdcm/Source/MediaStorageAndFileFormat/gdcmRAWCodec.cxx b/Modules/ThirdParty/GDCM/src/gdcm/Source/MediaStorageAndFileFormat/gdcmRAWCodec.cxx
index 18208127cda..187681c38f4 100644
--- a/Modules/ThirdParty/GDCM/src/gdcm/Source/MediaStorageAndFileFormat/gdcmRAWCodec.cxx
+++ b/Modules/ThirdParty/GDCM/src/gdcm/Source/MediaStorageAndFileFormat/gdcmRAWCodec.cxx
@@ -117,6 +117,12 @@ bool RAWCodec::DecodeBytes(const char* inBytes, size_t inBufferLength,
       this->GetPixelFormat() == PixelFormat::INT12 )
     {
     size_t len = str.size() * 16 / 12;
+    if (inOutBufferLength != len)
+    {
+      gdcmDebugMacro("inOutBufferLength = " << inOutBufferLength
+                     << ", inBufferLength = " << inBufferLength << ", len = " << len)
+      return false;
+    }
     char * copy = new char[len];
     bool b = Unpacker12Bits::Unpack(copy, str.data(), str.size() );
     if (!b)