From 112d3bd0aaacad51305e1464d4b381dabad0e88b Mon Sep 17 00:00:00 2001
From: Thomas Daede <daede003@umn.edu>
Date: Thu, 17 May 2018 16:19:19 -0700
Subject: [PATCH 02/15] Sanity check number of channels in setup.

Fixes #2335.

[this is CVE-2018-10392]
---
 lib/vorbisenc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/vorbisenc.c b/lib/vorbisenc.c
index 4fc7b62..64a51b5 100644
--- a/lib/vorbisenc.c
+++ b/lib/vorbisenc.c
@@ -684,6 +684,7 @@ int vorbis_encode_setup_init(vorbis_info *vi){
   highlevel_encode_setup *hi=&ci->hi;
 
   if(ci==NULL)return(OV_EINVAL);
+  if(vi->channels<1||vi->channels>255)return(OV_EINVAL);
   if(!hi->impulse_block_p)i0=1;
 
   /* too low/high an ATH floater is nonsensical, but doesn't break anything */
