gdal: Heap-buffer-overflow in DDFFieldDefn::ExtractSubstring

Project: https://github.com/OSGeo/gdal.git Detailed report: https://oss-fuzz.com/testcase?key=5480058187677696 Project: gdal Fuzzer: libFuzzergdalogrfuzzer Fuzz target binary: ogrfuzzer Job Type: libfuzzerasangdal Platform Id: linux Crash Type: Heap-buffer-overflow WRITE 1 Crash Address:...