[issue21082] os.makedirs(exist_ok=True) is not thread-safe: umask is set temporary to 0, serious security problem

[Antoine Pitrou]

Antoine Pitrou added the comment:

(note that Victor's patch is of course not an actual fix, only a mitigation; if someone is relying on a stricter umask they will still be vulnerable to this)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21082>
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