From b736e9edc337b3073139c5b9ca0d138fce564c3c Mon Sep 17 00:00:00 2001
From: Chuck Walbourn <chuckw@microsoft.com>
Date: Wed, 6 Apr 2022 00:40:10 -0700
Subject: [PATCH] Add check for unexpected EOF to LoadDDSTextureFromFile

---
 DirectXTex/DirectXTexDDS.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/DirectXTex/DirectXTexDDS.cpp b/DirectXTex/DirectXTexDDS.cpp
index b89a9e2..e62ccd7 100644
--- a/DirectXTex/DirectXTexDDS.cpp
+++ b/DirectXTex/DirectXTexDDS.cpp
@@ -1944,11 +1944,18 @@ HRESULT DirectX::LoadFromDDSFile(
         }
 
     #ifdef WIN32
-        if (!ReadFile(hFile.get(), image.GetPixels(), static_cast<DWORD>(image.GetPixelsSize()), &bytesRead, nullptr))
+        auto pixelBytes = static_cast<DWORD>(image.GetPixelsSize());
+        if (!ReadFile(hFile.get(), image.GetPixels(), pixelBytes, &bytesRead, nullptr))
         {
             image.Release();
             return HRESULT_FROM_WIN32(GetLastError());
         }
+
+        if (bytesRead != pixelBytes)
+        {
+            image.Release();
+            return E_FAIL;
+        }
     #else
         inFile.read(reinterpret_cast<char*>(image.GetPixels()), image.GetPixelsSize());
         if (!inFile)