[xiph-commits] r14604 - trunk/vorbis/lib

[xiphmont at svn.xiph.org]

Author: xiphmont
Date: 2008-03-19 01:03:29 -0700 (Wed, 19 Mar 2008)
New Revision: 14604

Modified:
   trunk/vorbis/lib/codebook.c
Log:
dd checks/rejection for absurdly huge codebooks.



Modified: trunk/vorbis/lib/codebook.c
===================================================================
--- trunk/vorbis/lib/codebook.c	2008-03-19 08:02:58 UTC (rev 14603)
+++ trunk/vorbis/lib/codebook.c	2008-03-19 08:03:29 UTC (rev 14604)
@@ -159,6 +159,8 @@
   s->entries=oggpack_read(opb,24);
   if(s->entries==-1)goto _eofout;
 
+  if(_ilog(s->dim)+_ilog(s->entries)>24)goto _eofout;
+
   /* codeword ordering.... length ordered or unordered? */
   switch((int)oggpack_read(opb,1)){
   case 0: