check for exifSize

9 years ago · 80df9ddedb
parent 1260060d7d
commit 80df9ddedb
1 changed files with 3 additions and 0 deletions
--- a/modules/imgcodecs/src/jpeg_exif.cpp
+++ b/modules/imgcodecs/src/jpeg_exif.cpp
@ -158,6 +158,9 @@ std::map<int, ExifEntry_t > ExifReader::getExif()

            case APP1: //actual Exif Marker
                exifSize = getFieldSize(f);
+                if (exifSize <= offsetToTiffHeader) {
+                    throw ExifParsingError();
+                }
                m_data.resize( exifSize - offsetToTiffHeader );
                fseek(f, static_cast<long>( offsetToTiffHeader ), SEEK_CUR);
                count = fread( &m_data[0], sizeof( unsigned char ), exifSize - offsetToTiffHeader, f );