[FFmpeg-trac] #764(avcodec:new): Increasing robustness of runlength decoding for scantable access in mpeg12.c

FFmpeg trac at avcodec.org
Thu Dec 15 23:48:09 CET 2011


#764: Increasing robustness of runlength decoding for scantable access in
mpeg12.c
-------------------------------------+-------------------------------------
             Reporter:  erik         |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avcodec
              Version:  unspecified  |               Resolution:
             Keywords:  mpeg         |               Blocked By:
  robustness                         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by erik):

 I instrumented the code to log the illegal values.
 I use avformat for the demuxing and avcodec for decoding.
 Will run the patched SW on a week worth of recording on 11 channels.
 If there is no more crashing (and there used to be a lot) then at least I
 am happy
 But there is of course the possibility that this index error is a side
 effect of another memory corruption error, then I am back to square 1

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/764#comment:7>
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