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

[FFmpeg]

#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 will put some range check debug message writing code before the scan
 table access to quickly detect where the error is so I do not need to
 replicate a crash.
 The wrong index was -31023 or something in that range so adding a bit to
 the table won't help.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/764#comment:4>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker