additional verification of DWA data sizes (#914)

Signed-off-by: Peter Hillman <peterh@wetafx.co.nz>
AcademySoftwareFoundation · Feb 6, 2021 · 1b59bd3 · 1b59bd3
1 parent 4dd3e09
commit 1b59bd3
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/lib/OpenEXR/ImfDwaCompressor.cpp b/src/lib/OpenEXR/ImfDwaCompressor.cpp
@@ -2606,6 +2606,14 @@ DwaCompressor::uncompress
             throw IEX_NAMESPACE::BaseExc("DC data corrupt.");
         }
     }
+    else
+    {
+        // if the compressed size is 0, then the uncompressed size must also be zero
+        if (totalDcUncompressedCount!=0)
+        {
+             throw IEX_NAMESPACE::BaseExc("DC data corrupt.");
+        }
+    }
 
     //
     // Uncompress the RLE data into _rleBuffer, then unRLE the results