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

2016-02-08 17:11:35 +03:00
parent f9f5313670
commit 112aa49104
1 changed files with 4 additions and 1 deletions
--- 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;
    }