From: Daniel Exner <dex@dragonslave.de>
Date: Mon, 18 Jun 2012 22:05:48 +0200
Subject: Avoid SIGFPE when bytespersample is zero

Forwarded: https://github.com/xiph/vorbis/pull/66
Origin: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=635906#15
Reviewed-By: Petter Reinholdtsen <pere@hungry.com>
Last-Update: 2020-08-24
---
 lib/vorbisfile.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: libvorbis/lib/vorbisfile.c
===================================================================
--- libvorbis.orig/lib/vorbisfile.c
+++ libvorbis/lib/vorbisfile.c
@@ -1992,7 +1992,8 @@ long ov_read_filter(OggVorbis_File *vf,c
     vorbis_fpu_control fpu;
 
     if(channels<1||channels>255)return(OV_EINVAL);
-    if(samples>length/bytespersample)samples=length/bytespersample;
+    if(bytespersample && samples>length/bytespersample)
+     samples=length/bytespersample;
 
     if(samples <= 0)
       return OV_EINVAL;