[New-bugs-announce] [issue15738] Crash (constructed) in subprocess_fork_exec()

[Stefan Krah]

New submission from Stefan Krah:

Coverity found a missing NULL check in subprocess_fork_exec(). Patch attached.


Demonstration:

import _posixsubprocess
class Z(object):
    def __len__(self):
        return 1

_posixsubprocess.fork_exec(Z(),[b'1'],3,[1, 2],5,6,7,8,9,10,11,12,13,14,15,16,17)


[Segmentation fault]

----------
components: Extension Modules
files: subprocess_fork_exec.diff
keywords: patch
messages: 168645
nosy: skrah
priority: normal
severity: normal
stage: patch review
status: open
title: Crash (constructed) in subprocess_fork_exec()
type: crash
versions: Python 3.3
Added file: http://bugs.python.org/file26927/subprocess_fork_exec.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15738>
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