There are 3 open security issues in buster.
3 issues left for the package maintainer to handle:
fmt_mtm_load_song in fmt/mtm.c in Schism Tracker 20190722 has a heap-based buffer overflow.
An issue was discovered in Schism Tracker through 20190722. There is an integer underflow via a large plen in fmt_okt_load_song in the Amiga Oktalyzer parser in fmt/okt.c.
An issue was discovered in Schism Tracker through 20190722. There is a heap-based buffer overflow via a large number of song patterns in fmt_mtm_load_song in fmt/mtm.c, a different vulnerability than CVE-2019-14465.
You can find information about how to handle these issues in the security team's documentation.