An issue was discovered in the EXIF component in PHP before 7.1.27, 7.2.x before 7.2.16, and 7.3.x before 7.3.3. There is an uninitialized read in exif_process_IFD_in_MAKERNOTE because of mishandling the data_len variable.
CREATE(Triage): {Link=https://nvd.nist.gov/vuln/detail/CVE-2019-9639 User=admin}
