From b56ffce0c0773ec5ca04c466bc00b1bbcaf65aef Mon Sep 17 00:00:00 2001
From: Tim Terriberry <tterribe@xiph.org>
Date: Sun, 4 Jan 2015 19:11:49 +0000
Subject: Port r19419 to Tremor.

Fix crash on corrupt input file (invalid mode index)


git-svn-id: https://svn.xiph.org/trunk/Tremor@19420 0101bb08-14d6-0310-b084-bc0e0c8e3800
---
 synthesis.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/synthesis.c b/synthesis.c
index fe63924..d22cb82 100644
--- a/synthesis.c
+++ b/synthesis.c
@@ -124,7 +124,7 @@ long vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op){
     /* read our mode and pre/post windowsize */
     mode=oggpack_read(&opb,modebits);
   }
-  if(mode==-1)return(OV_EBADPACKET);
+  if(mode==-1 || !ci->mode_param[mode])return(OV_EBADPACKET);
   return(ci->blocksizes[ci->mode_param[mode]->blockflag]);
 }
 
-- 
cgit v1.2.1