From 112aa491045d2001741ac157dc359f65a92ae260 Mon Sep 17 00:00:00 2001
From: Maksim Shabunin <maksim.shabunin@itseez.com>
Date: Mon, 8 Feb 2016 17:11:35 +0300
Subject: [PATCH] ExifReader::getFormat : check buffer length before accessing,
 fixes 6059

---
 modules/imgcodecs/src/jpeg_exif.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/modules/imgcodecs/src/jpeg_exif.cpp b/modules/imgcodecs/src/jpeg_exif.cpp
index 103e72ddec..ebc4f05352 100644
--- a/modules/imgcodecs/src/jpeg_exif.cpp
+++ b/modules/imgcodecs/src/jpeg_exif.cpp
@@ -245,7 +245,10 @@ void ExifReader::parseExif()
  */
 Endianess_t ExifReader::getFormat() const
 {
-    if( m_data[0] != m_data[1] )
+    if (m_data.size() < 1)
+        return NONE;
+
+    if( m_data.size() > 1 && m_data[0] != m_data[1] )
     {
         return NONE;
     }
-- 
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