[FFmpeg-cvslog] r11144 - trunk/libavformat/mp3.c

[michael]

Author: michael
Date: Mon Dec  3 05:49:01 2007
New Revision: 11144

Log:
prevent O(n^2) execution of ff_mpa_decode_header() for valid mp3 files


Modified:
   trunk/libavformat/mp3.c

Modified: trunk/libavformat/mp3.c
==============================================================================
--- trunk/libavformat/mp3.c	(original)
+++ trunk/libavformat/mp3.c	Mon Dec  3 05:49:01 2007
@@ -418,6 +418,8 @@ static int mp3_read_probe(AVProbeData *p
         max_frames = FFMAX(max_frames, frames);
         if(buf == p->buf)
             first_frames= frames;
+        if(buf2 > end)
+            break;
     }
     if   (first_frames>=3) return AVPROBE_SCORE_MAX/2+1;
     else if(max_frames>=3) return AVPROBE_SCORE_MAX/4;