yop: check that extradata is large enough.
authorAnton Khirnov <anton@khirnov.net>
Wed, 30 Jan 2013 06:00:50 +0000 (07:00 +0100)
committerAnton Khirnov <anton@khirnov.net>
Wed, 6 Feb 2013 09:21:52 +0000 (10:21 +0100)
CC:libav-stable@libav.org

libavcodec/yop.c

index 69700bd..be996c2 100644 (file)
@@ -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];