check for frames with 2*size > max_dist and no crc
authorMichael Niedermayer <michaelni@gmx.at>
Tue, 14 Nov 2006 22:24:10 +0000 (22:24 +0000)
committerMichael Niedermayer <michaelni@gmx.at>
Tue, 14 Nov 2006 22:24:10 +0000 (22:24 +0000)
Originally committed as revision 7076 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/nutdec.c

index 97bad24..b3e4943 100644 (file)
@@ -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
         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;
 
     }
     *flags_ret= flags;