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GeezerVison is showing github.com — [3.9] gh-135034: Normalize link targets in tarfile, add `os.path.realpath(strict='allow_missing')` (GH-135037) by Yhg1s · Pull Request #135084 · python/cpython

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@Yhg1s

@Yhg1s Yhg1s commented Jun 3, 2025 •
edited by bedevere-app Bot
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Addresses CVEs 2024-12718, 2025-4138, 2025-4330, and 2025-4517.
(cherry picked from commit 3612d8f)

Co-authored-by: Łukasz Langa [email protected]
Co-authored-by: Petr Viktorin [email protected]
Co-authored-by: Seth Michael Larson [email protected]
Co-authored-by: Adam Turner [email protected]
Co-authored-by: Serhiy Storchaka [email protected]

  • Issue: Multiple tarfile extraction filter bypasses (filter="tar"/filter="data") #135034

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@ambv @encukou
@sethmlarson @AA-Turner @serhiy-storchaka @Yhg1s
[3.9] pythongh-135034: Normalize link targets in tarfile, add `os.pat…
ab834f4 
…h.realpath(strict='allow_missing')` (pythonGH-135037)

Addresses CVEs 2024-12718, 2025-4138, 2025-4330, and 2025-4517.
(cherry picked from commit 3612d8f)

Co-authored-by: Łukasz Langa <[email protected]>
Co-authored-by: Petr Viktorin <[email protected]>
Co-authored-by: Seth Michael Larson <[email protected]>
Co-authored-by: Adam Turner <[email protected]>
Co-authored-by: Serhiy Storchaka <[email protected]>
@Yhg1s
Yhg1s requested a review from ethanfurman as a code owner June 3, 2025 13:37
@bedevere-app bedevere-app Bot added the awaiting core review label Jun 3, 2025
This was referenced Jun 3, 2025
gh-135034: Normalize link targets in tarfile, add os.path.realpath(strict='allow_missing') #135037
Merged
Multiple tarfile extraction filter bypasses (filter="tar"/filter="data") #135034
Closed
ambv
ambv reviewed Jun 3, 2025
View reviewed changes
Comment thread Doc/whatsnew/3.9.rst Outdated
the CVE-2023-27043 fix.)


Notable changes in 3.10.18

@ambv ambv Jun 3, 2025

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@Yhg1s Yhg1s Jun 3, 2025

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Sorry, patch level of 3.9 is so big it overflowed.

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Yhg1s and others added 7 commits June 3, 2025 15:39
@Yhg1s
Version overflow in whatsnew file.
62cfa92
@Yhg1s
Remove backported tests that won't pass in 3.10 and earlier for reasons
bd8c64e 
unrelated to the security fix.
@Yhg1s
Fix a few merge errors.
81c1e0a
@encukou
Work around Path.glob() failure in 3.10
f7e5301
@encukou
Complete the backport of ALLOW_MISSING
6fd81d4
@encukou
Remove tests for WASI
57edaba
@encukou
Adjust imports for 3.10
452c70a
encukou
encukou approved these changes Jun 3, 2025
View reviewed changes
@bedevere-app bedevere-app Bot added awaiting merge and removed awaiting core review labels Jun 3, 2025
@ambv
ambv merged commit dd8f187 into python:3.9 Jun 3, 2025
@bedevere-app bedevere-app Bot removed the awaiting merge label Jun 3, 2025
@krassowski krassowski mentioned this pull request Jul 18, 2025
Python 3.9.23 regression for Path.resolve() on Windows with WinError 53 #136755
Closed
@Yhg1s
Yhg1s deleted the backport-3612d8f-3.9 branch August 13, 2026 12:52
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@ambv ambv ambv left review comments
@encukou encukou encukou approved these changes
@ethanfurman ethanfurman Awaiting requested review from ethanfurman ethanfurman is a code owner

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3 participants

@Yhg1s @ambv @encukou
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