In 'EXTRACTOR_wav_extract_method' function of wav_extractor.c, the program does not check the value of sample_rate, with a crafted file, the sample_rate can be set to zero, resulting in a divide by zero and a crash (CVE-2017-15266).
NULL Pointer Dereference vulnerability in libextract when getting flac meta from libFlac (CVE-2017-15267).
NULL Pointer Dereference vulnerability in libextractor EXTRACTOR_nsf_extract_method() (rhbz#1501695).