From 06cf597c352519d2b70f293518c61b8c312f5d4f Mon Sep 17 00:00:00 2001
From: Anton Khirnov
Date: Wed, 30 Jan 2013 07:00:50 +0100
Subject: yop: check that extradata is large enough.

CC:libav-stable@libav.org
---
 libavcodec/yop.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'libavcodec/yop.c')

diff --git a/libavcodec/yop.c b/libavcodec/yop.c
index 69700bd266..be996c2bfb 100644
--- a/libavcodec/yop.c
+++ b/libavcodec/yop.c
@@ -89,6 +89,11 @@ static av_cold int yop_decode_init(AVCodecContext *avctx)
         return AVERROR_INVALIDDATA;
     }
 
+    if (avctx->extradata_size < 3) {
+        av_log(avctx, AV_LOG_ERROR, "Missing or incomplete extradata.\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     avctx->pix_fmt = AV_PIX_FMT_PAL8;
 
     s->num_pal_colors = avctx->extradata[0];
-- 
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