From 0fa8d19987f03444365a5c7f73b7ecf1520b011e Mon Sep 17 00:00:00 2001
From: Baptiste Coudurier <baptiste.coudurier@gmail.com>
Date: Wed, 4 May 2011 18:45:36 -0700
Subject: [PATCH] In svq3 decoder, check negative mb_type, fix potential crash.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavcodec/svq3.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index 16f483432f8..75166066ff2 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -1049,7 +1049,7 @@ static int svq3_decode_frame(AVCodecContext *avctx,
} else if (s->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4) {
mb_type += 4;
}
- if (mb_type > 33 || svq3_decode_mb(svq3, mb_type)) {
+ if ((unsigned)mb_type > 33 || svq3_decode_mb(svq3, mb_type)) {
av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
return -1;
}
--
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