From 2dbe0bd45fbdff99f2fd50c1a7fee3bc5ce96cee Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Tue, 14 Nov 2006 22:24:10 +0000
Subject: [PATCH] check for frames with 2*size > max_dist and no crc

Originally committed as revision 7076 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavformat/nutdec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/nutdec.c b/libavformat/nutdec.c
index 97bad2410d..b3e49435de 100644
--- a/libavformat/nutdec.c
+++ b/libavformat/nutdec.c
@@ -687,6 +687,9 @@ static int decode_frame_header(NUTContext *nut, int *flags_ret, int64_t *pts, in
         get_v(bc);
     if(flags&FLAG_CHECKSUM){
         get_be32(bc); //FIXME check this
+    }else if(size > 2*nut->max_distance){
+        av_log(s, AV_LOG_ERROR, "frame size > 2max_distance and no checksum\n");
+        return -1;
     }
     *flags_ret= flags;