[FFmpeg-trac] #4162(avformat:open): matroska: deadlock with fuzzed file

[FFmpeg]

#4162: matroska: deadlock with fuzzed file
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             Reporter:  tholin       |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mkv          |               Blocked By:
  deadlock regression                |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by gjdfgh):

 >Regression since d493170e

 Not really. This just made parsing more robust. You could probably
 construct a file that would cause the same issue before this commit.

 Anyway, patch on ML: [PATCH] avformat/matroskadec: fix handling of
 recursive SeekHead elements

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Ticket URL: <https://trac.ffmpeg.org/ticket/4162#comment:2>
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