lib/codebook.c in libvorbis before 1.3.6, as used in StepMania 5.0.12 and other products, has insufficient array bounds checking via a crafted OGG file.
https://github.com/stepmania/stepmania/issues/1890
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20412