From 18d1d5886bb78e4d0e11a2a0193fda765e05805d Mon Sep 17 00:00:00 2001
From: Janne Grunau <janne-libav@jannau.net>
Date: Tue, 14 Feb 2012 15:02:30 +0100
Subject: rv30: check block type validity

Prevents crashes with the fuzzed samples from bugs 88, 89 and 125 after
"golomb: avoid infinite loop on all-zero input".
---
 libavcodec/rv30.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libavcodec/rv30.c')

diff --git a/libavcodec/rv30.c b/libavcodec/rv30.c
index 4828e982b7..1bb223cd7b 100644
--- a/libavcodec/rv30.c
+++ b/libavcodec/rv30.c
@@ -103,7 +103,7 @@ static int rv30_decode_mb_info(RV34DecContext *r)
     GetBitContext *gb = &s->gb;
     int code = svq3_get_ue_golomb(gb);
 
-    if(code > 11){
+    if (code < 0 || code > 11) {
         av_log(s->avctx, AV_LOG_ERROR, "Incorrect MB type code\n");
         return -1;
     }
-- 
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