In the startread function in xa.c in Sound eXchange (SoX) through 14.4.2, a corrupt header specifying zero channels triggers an infinite loop with a resultant NULL pointer dereference, which may allow a remote attacker to cause a denial-of-service.
https://public-inbox.org/sox-devel/20171109114554.16297-1-mans%40mansr.com/raw
https://lists.debian.org/debian-lts-announce/2019/02/msg00042.html