From df987cabc20c90803692022fd232def837cb88cc Mon Sep 17 00:00:00 2001
From: Peter Hillman <peterh@wetafx.co.nz>
Date: Mon, 20 Jan 2020 10:52:17 +1300
Subject: [PATCH] validate tiles have valid headers when raw reading tiles

Signed-off-by: Peter Hillman <peterh@wetafx.co.nz>
---
 OpenEXR/IlmImf/ImfTiledInputFile.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/OpenEXR/IlmImf/ImfTiledInputFile.cpp b/OpenEXR/IlmImf/ImfTiledInputFile.cpp
index e68f713bd1..20ff0e563d 100644
--- a/OpenEXR/IlmImf/ImfTiledInputFile.cpp
+++ b/OpenEXR/IlmImf/ImfTiledInputFile.cpp
@@ -1316,6 +1316,11 @@ TiledInputFile::rawTileData (int &dx, int &dy,
         readNextTileData (_data->_streamData, _data, dx, dy, lx, ly,
 			  tileBuffer->buffer,
                           pixelDataSize);
+
+        if ( !isValidLevel(lx,ly) || !isValidTile (dx, dy, lx, ly) )
+            throw IEX_NAMESPACE::ArgExc ("File contains an invalid tile");
+
+
         if(isMultiPart(version()))
         {
             if (old_dx!=dx || old_dy !=dy || old_lx!=lx || old_ly!=ly)