ExifReader::getFormat : check buffer length before accessing, fixes 6059

112aa491 · Maksim Shabunin · f9f53136 · 112aa491
Commit 112aa491 authored Feb 08, 2016 by Maksim Shabunin
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jpeg_exif.cpp modules/imgcodecs/src/jpeg_exif.cpp +4 -1

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--- 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;
    }