From efc360fc17935453e95f62939dd5d7caacce4bf7 Mon Sep 17 00:00:00 2001
From: Kimball Thurston <kdt3rd@gmail.com>
Date: Sun, 29 Jul 2018 13:08:54 +1200
Subject: [PATCH] fixes #260, out of bounds vector access

noticed by Google Autofuzz

Signed-off-by: Kimball Thurston <kdt3rd@gmail.com>
---
 OpenEXR/IlmImf/ImfScanLineInputFile.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/OpenEXR/IlmImf/ImfScanLineInputFile.cpp b/OpenEXR/IlmImf/ImfScanLineInputFile.cpp
index 35b5ed4d0..d07005d39 100644
--- a/OpenEXR/IlmImf/ImfScanLineInputFile.cpp
+++ b/OpenEXR/IlmImf/ImfScanLineInputFile.cpp
@@ -375,6 +375,8 @@ readPixelData (InputStreamMutex *streamData,
     //
 
     int lineBufferNumber = (minY - ifd->minY) / ifd->linesInBuffer;
+    if (lineBufferNumber < 0 || lineBufferNumber >= int(ifd->lineOffsets.size()))
+        THROW (IEX_NAMESPACE::InputExc, "Invalid scan line " << minY << " requested or missing.");
 
     Int64 lineOffset = ifd->lineOffsets[lineBufferNumber];