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36 changed files with 19 additions and 301 deletions

4
.gitignore vendored
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@ -1,3 +1 @@
/*.tar.*
/*.src.rpm
/results_python3*
SOURCES/Python-3.9.25.tar.xz

1
.python3.9.metadata Normal file
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@ -0,0 +1 @@
36c7257ec30dca042679626d0dff79715acd4efb SOURCES/Python-3.9.25.tar.xz

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@ -1,93 +0,0 @@
From 8db3857331be8920c65f641c2d57e4e51f71d6bc Mon Sep 17 00:00:00 2001
From: Stan Ulbrych <stan@python.org>
Date: Tue, 23 Jun 2026 14:31:38 +0100
Subject: [PATCH 1/2] gh-151558: Fix symlink escape via `tarfile`
hardlink-extraction fallback (GH-151559)
---
Lib/tarfile.py | 3 +++
Lib/test/test_tarfile.py | 25 +++++++++++++++++++++++++
2 files changed, 28 insertions(+)
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index fa3f922647..191fd38cba 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -2668,6 +2668,9 @@ class TarFile(object):
"makelink_with_filter: if filter_function is not None, "
+ "extraction_root must also not be None")
try:
+ filter_function(
+ unfiltered.replace(name=tarinfo.name, deep=False),
+ extraction_root)
filtered = filter_function(unfiltered, extraction_root)
except _FILTER_ERRORS as cause:
raise LinkFallbackError(tarinfo, unfiltered.name) from cause
diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
index 8b9aea223c..34d0cff17b 100644
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -3854,6 +3854,31 @@ class TestExtractionFilters(unittest.TestCase):
self.expect_file("boom", symlink_to='../../link_here')
self.expect_file("c", symlink_to='b')
+ @symlink_test
+ def test_sneaky_hardlink_fallback_deep(self):
+ # (CVE-2026-11940)
+ with ArchiveMaker() as arc:
+ arc.add("a/b/s", symlink_to=os.path.join("..", "escape"))
+ arc.add("s", hardlink_to=os.path.join("a", "b", "s"))
+
+ with self.check_context(arc.open(), 'data'):
+ e = self.expect_exception(
+ tarfile.LinkFallbackError,
+ "link 's' would be extracted as a copy of "
+ + "'a/b/s', which was rejected")
+ self.assertIsInstance(e.__cause__,
+ tarfile.LinkOutsideDestinationError)
+
+ for filter in 'tar', 'fully_trusted':
+ with self.subTest(filter), self.check_context(arc.open(), filter):
+ if not support.can_symlink():
+ self.expect_file("a/")
+ self.expect_file("a/b/")
+ else:
+ self.expect_file("a/b/s", symlink_to=os.path.join('..', 'escape'))
+ self.expect_file("s", symlink_to=os.path.join('..', 'escape'))
+
+ @symlink_test
def test_exfiltration_via_symlink(self):
# (CVE-2025-4138)
# Test changing symlinks that result in a symlink pointing outside
From b803c1f883f01db47a9ae28a79c5caedb859cfce Mon Sep 17 00:00:00 2001
From: RHEL Packaging Agent <redhat-ymir-agent@redhat.com>
Date: Thu, 6 Aug 2026 09:39:24 +0000
Subject: [PATCH 2/2] Fix: replace undefined symlink_test decorator with
support.skip_unless_symlink for Python 3.9
---
Lib/test/test_tarfile.py | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
index 34d0cff17b..e45ca141c9 100644
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -3854,7 +3854,7 @@ class TestExtractionFilters(unittest.TestCase):
self.expect_file("boom", symlink_to='../../link_here')
self.expect_file("c", symlink_to='b')
- @symlink_test
+ @support.skip_unless_symlink
def test_sneaky_hardlink_fallback_deep(self):
# (CVE-2026-11940)
with ArchiveMaker() as arc:
@@ -3878,7 +3878,6 @@ class TestExtractionFilters(unittest.TestCase):
self.expect_file("a/b/s", symlink_to=os.path.join('..', 'escape'))
self.expect_file("s", symlink_to=os.path.join('..', 'escape'))
- @symlink_test
def test_exfiltration_via_symlink(self):
# (CVE-2025-4138)
# Test changing symlinks that result in a symlink pointing outside

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@ -0,0 +1,16 @@
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iQIzBAABCAAdFiEE4/8oOcBIslwITevpsmmV4xAlBWgFAmkFBpsACgkQsmmV4xAl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=5qMt
-----END PGP SIGNATURE-----

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@ -17,7 +17,7 @@ URL: https://www.python.org/
#global prerel ...
%global upstream_version %{general_version}%{?prerel}
Version: %{general_version}%{?prerel:~%{prerel}}
Release: 10%{?dist}
Release: 9%{?dist}
License: Python
@ -519,12 +519,6 @@ Patch489: 00489-openssl-3.5.7.patch
# only joined and parsed once enough has piled up.
Patch490: 00490-cve-2026-15308.patch
# 00492 #
# CVE-2026-11940
#
# Fix symlink escape via tarfile hardlink-extraction fallback
Patch492: 00492-cve-2026-11940.patch
# (New patches go here ^^^)
#
# When adding new patches to "python" and "python3" in Fedora, EL, etc.,
@ -1936,10 +1930,6 @@ CheckPython optimized
# ======================================================
%changelog
* Thu Aug 13 2026 RHEL Packaging Agent <redhat-ymir-agent@redhat.com> - 3.9.25-10
- Security fix for CVE-2026-11940
Resolves: RHEL-227223
* Mon Jul 13 2026 Lukáš Zachar <lzachar@redhat.com> - 3.9.25-9
- Security fix for CVE-2026-15308
Resolves: RHEL-193783

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@ -1,6 +0,0 @@
--- !Policy
product_versions:
- rhel-9
decision_context: osci_compose_gate
rules:
- !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

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@ -1,90 +0,0 @@
# KNOWN BUGS:
# https://bugzilla.redhat.com/show_bug.cgi?id=1489816
addFilter(r'crypto-policy-non-compliance-openssl')
# TESTS:
addFilter(r'(zero-length|pem-certificate|uncompressed-zip) /usr/lib(64)?/python3\.\d+/test')
# OTHER DELIBERATES:
# chroot function
addFilter(r'missing-call-to-chdir-with-chroot')
# intentionally unversioned and selfobsoleted
addFilter(r'unversioned-explicit-obsoletes python')
addFilter(r'self-obsoletion python3\.\d+ obsoletes python3\.\d+')
# intentionally hardcoded
addFilter(r'hardcoded-library-path in %{_prefix}/lib/(debug/%{_libdir}|python%{pybasever})')
# intentional for our pythonXY package
addFilter(r'python3\.\d+\.[^:]+: (E|W): devel-file-in-non-devel-package')
# we have non binary stuff, python files
addFilter(r'only-non-binary-in-usr-lib')
# some devel files that are deliberately needed
addFilter(r'devel-file-in-non-devel-package /usr/include/python3\.\d+m?/pyconfig-(32|64)\.h')
addFilter(r'devel-file-in-non-devel-package /usr/lib(64)?/python3\.\d+/distutils/tests/xxmodule\.c')
# some bytecode is shipped without sources on purpose, as a space optimization
# if this regex needs to be relaxed in the future, make sure it **does not** match pyc files in __pycache__
addFilter(r'python-bytecode-without-source /usr/lib(64)?/python3\.\d+/(encodings|pydoc_data)/[^/]+.pyc')
# SORRY, NOT SORRY:
# manual pages
addFilter(r'no-manual-page-for-binary (idle|pydoc|pyvenv|2to3|python3?-debug|pathfix|msgfmt|pygettext)')
addFilter(r'no-manual-page-for-binary python3?.*-config$')
addFilter(r'no-manual-page-for-binary python3\.\d+dm?$')
# missing documentation from subpackages
addFilter(r'^python3(\.\d+)?-(debug|tkinter|test|idle)\.[^:]+: (E|W): no-documentation')
# platform python is obsoleted, but not provided
addFilter(r'obsolete-not-provided platform-python')
# RPMLINT IMPERFECTIONS
# https://github.com/rpm-software-management/rpmlint/issues/123
addFilter(r'python-bytecode-wrong-magic-value .* expected 33\d\d \(3\.7\), found 3393')
# https://github.com/rpm-software-management/rpmlint/pull/133
addFilter(r'python-bytecode-wrong-magic-value .* expected 33\d\d \(3\.7\), found 3394')
# https://bugzilla.redhat.com/show_bug.cgi?id=1550562
# https://github.com/rpm-software-management/rpmlint/issues/128
addFilter(r'python-bytecode-inconsistent-mtime .* 1970')
# we provide python(abi) manually to be sure. createrepo will merge this with the automatic
addFilter(r'python3(\.\d+)?\.[^:-]+: (E|W): useless-provides python\(abi\)')
# debugsource
addFilter(r'^python3(\.\d+)?-debugsource\.[^:]+: (E|W): no-documentation')
# debuginfo
addFilter(r'^python3(\.\d+)?-debuginfo\.[^:]+: (E|W): useless-provides debuginfo\(build-id\)')
# this is OK for F28+
addFilter(r'library-without-ldconfig-post')
# debug package contains devel and non-devel files
addFilter(r'python3(\.\d+)?-debug\.[^:]+: (E|W): (non-)?devel-file-in-(non-)?devel-package')
# this goes to other subpackage, hence not actually dangling, the read error is bogus
addFilter(r'dangling-relative-symlink /usr/lib(64)?/pkgconfig/python-3\.\d+dm?(-embed)?\.pc python-3\.\d+(-embed)?\.pc')
addFilter(r'read-error /usr/lib(64)?/pkgconfig/python-3\.\d+dm?(-embed)?\.pc \[Errno 2\]')
# the python-unversioned-command package contains dangling symlinks by design
addFilter(r'^python-unversioned-command\.[^:]+: (E|W): dangling-relative-symlink '
r'(/usr/bin/python \./python3|/usr/share/man/man1/python\.1\S* ./python3\.1\S*)$')
# we need this macro to evaluate, even if the line starts with #
addFilter(r'macro-in-comment %\{_pyconfig(32|64)_h\}')
# Python modules don't need to be linked against libc
# Since 3.8 they are no longer linked against libpython3.8.so.1.0
addFilter(r'E: library-not-linked-against-libc /usr/lib(64)?/python3\.\d+/lib-dynload/')
addFilter(r'E: shared-lib-without-dependency-information /usr/lib(64)?/python3\.\d+/lib-dynload/')
# SPELLING ERRORS
addFilter(r'spelling-error .* en_US (bytecode|pyc|filename|tkinter|namespaces|pytest) ')

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@ -1,32 +0,0 @@
# exclude test XML data (not always valid) from XML validity check:
xml:
ignore:
- /usr/lib*/python*/test/xmltestdata/*
- /usr/lib*/python*/test/xmltestdata/*/*
# exclude _socket from ipv4 only functions check, it has both ipv4 and ipv6 only
badfuncs:
ignore:
- /usr/lib*/python*/lib-dynload/_socket.*
# don't report changed content of compiled files
# that is expected with every toolchain update and not reproducible yet
changedfiles:
# note that this is a posix regex, so no \d
exclude_path: (\.so(\.[0-9]+(\.[0-9]+)?)?$|^/usr/bin/python[0-9]+\.[0-9]+d?m?$)
# files change size all the time, we don't need to VERIFY it
# however, the INFO is useful, so we don't disable the check entirely
filesize:
# artificially large number, TODO a better way
size_threshold: 100000
debuginfo:
ignore:
# libpython3.so doesn't contain compiled code
- /usr/lib/debug/usr/lib*/libpython3.so*debug
# completely disabled inspections:
inspections:
# we know about our patches, no need to report anything
patches: off

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SHA512 (Python-3.9.25.tar.xz) = 33fd65952cc3ce5df83825aa32a103935815bdd5a016e5fd9896cafb068a3f89b3a6134458a2694e4f0f4f8a9fbe84739b53116264728b32cde0f03ab210cb19
SHA512 (Python-3.9.25.tar.xz.asc) = 83f0a0e558aa89a106bdffeeb9b0fa2685fbd7be5c5954f9176c59c6c7023716207b07239f202b3508cbb98ca34572161955f0bfd3732fdb9265721cd6723dbe

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1

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---
standard-inventory-qcow2:
qemu:
m: 3G # Amount of VM memory

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---
- hosts: localhost
tags:
- classic
tasks:
- dnf:
name: "*"
state: latest
- dnf:
name: "https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm"
state: installed
- dnf:
name: "https://dl.fedoraproject.org/pub/epel/epel-next-release-latest-9.noarch.rpm"
state: installed
- hosts: localhost
roles:
- role: standard-test-basic
tags:
- classic
repositories:
- repo: "https://gitlab.com/redhat/centos-stream/tests/python.git"
dest: "python"
tests:
- smoke:
dir: python/smoke
run: VERSION=3.9 ./venv.sh
- debugsmoke:
dir: python/smoke
run: PYTHON=python3-debug TOX=false VERSION=3.9 ./venv.sh
- selftest:
dir: python/selftest
run: VERSION=3.9 X="-x test_wsgiref" ./parallel.sh
- debugtest:
dir: python/selftest
run: VERSION=3.9 PYTHON=python3-debug X="-x test_wsgiref" ./parallel.sh
- optimizedflags_self:
dir: python/flags
run: python3 ./assertflags.py -O3 PY_BUILTIN_MODULE_CFLAGS PY_CFLAGS_NODIST PY_CORE_CFLAGS PY_STDMODULE_CFLAGS
- optimizedflags_3rd:
dir: python/flags
run: python3 ./assertflags.py -O2 CFLAGS PY_CFLAGS
- debugflags:
dir: python/flags
run: python3-debug ./assertflags.py -O0
- marshalparser:
dir: python/marshalparser
run: VERSION=3.9 SAMPLE=10 test_marshalparser_compatibility.sh
required_packages:
- gcc # for extension building in venv and selftest
- gdb # for test_gdb
- python3.9 # the test subject
- python3-debug # for leak testing
- python3-devel # for extension building in venv and selftest
- python3-tkinter # for selftest
- python3-test # for selftest
- python3-tox # for venv tests
- glibc-all-langpacks # for locale tests
- marshalparser # for testing compatibility (magic numbers) with marshalparser