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re.finditer iterator is not reentrant, but doesn't protect against nested calls to __next__ #67879

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abacabadabacaba mannequin opened this issue Mar 17, 2015 · 4 comments
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re.finditer iterator is not reentrant, but doesn't protect against nested calls to __next__ #67879

abacabadabacaba mannequin opened this issue Mar 17, 2015 · 4 comments
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@serhiy-storchaka
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3.9 only security fixes 3.10 only security fixes 3.11 only security fixes topic-regex type-crash A hard crash of the interpreter, possibly with a core dump

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@abacabadabacaba
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abacabadabacaba mannequin commented Mar 17, 2015

BPO 23691
Nosy @ezio-melotti, @serhiy-storchaka, @miss-islington
PRs
  • bpo-23691: Protect the re.finditer() iterator from re-entering #32012
  • [3.10] bpo-23691: Protect the re.finditer() iterator from re-entering (GH-32012) #32025
  • [3.9] bpo-23691: Protect the re.finditer() iterator from re-entering (GH-32012) #32026
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = 'https://github.com/serhiy-storchaka'
closed_at = <Date 2022-03-21.12:49:20.842>
created_at = <Date 2015-03-17.17:17:06.635>
labels = ['expert-regex', '3.10', '3.9', 'type-crash', '3.11']
title = "re.finditer iterator is not reentrant, but doesn't protect against nested calls to __next__"
updated_at = <Date 2022-03-21.12:49:20.842>
user = 'https://bugs.python.org/abacabadabacaba'

    bugs.python.org fields:

    activity = <Date 2022-03-21.12:49:20.842>
actor = 'serhiy.storchaka'
assignee = 'serhiy.storchaka'
closed = True
closed_date = <Date 2022-03-21.12:49:20.842>
closer = 'serhiy.storchaka'
components = ['Regular Expressions']
creation = <Date 2015-03-17.17:17:06.635>
creator = 'abacabadabacaba'
dependencies = []
files = []
hgrepos = []
issue_num = 23691
keywords = ['patch']
message_count = 4.0
messages = ['238323', '415675', '415678', '415679']
nosy_count = 5.0
nosy_names = ['ezio.melotti', 'mrabarnett', 'abacabadabacaba', 'serhiy.storchaka', 'miss-islington']
pr_nums = ['32012', '32025', '32026']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue23691'
versions = ['Python 3.9', 'Python 3.10', 'Python 3.11']
    @abacabadabacaba
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    abacabadabacaba mannequin commented Mar 17, 2015

    Iterator returned by re.finditer includes a SRE_STATE value, which is not designed to be used concurrently. However, it is possible to call __next__ on such iterator while another such call is in progress, e.g. from a signal handler. This may result in corruption of SRE_STATE structure.

    @abacabadabacaba abacabadabacaba mannequin added topic-regex type-crash A hard crash of the interpreter, possibly with a core dump labels Mar 17, 2015
    @serhiy-storchaka serhiy-storchaka added the 3.7 (EOL) end of life label Nov 16, 2017
    @serhiy-storchaka serhiy-storchaka self-assigned this Nov 16, 2017
    @serhiy-storchaka serhiy-storchaka added 3.9 only security fixes 3.10 only security fixes 3.11 only security fixes and removed 3.7 (EOL) end of life labels Mar 20, 2022
    @serhiy-storchaka
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    New changeset 08eb754 by Serhiy Storchaka in branch 'main':
    bpo-23691: Protect the re.finditer() iterator from re-entering (GH-32012)
    08eb754

    @miss-islington
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    New changeset f89949e by Miss Islington (bot) in branch '3.9':
    bpo-23691: Protect the re.finditer() iterator from re-entering (GH-32012)
    f89949e

    @miss-islington
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    New changeset 1b21b55 by Miss Islington (bot) in branch '3.10':
    bpo-23691: Protect the re.finditer() iterator from re-entering (GH-32012)
    1b21b55

    @ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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    3.9 only security fixes 3.10 only security fixes 3.11 only security fixes topic-regex type-crash A hard crash of the interpreter, possibly with a core dump
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