Update to Python 3.10.21

See https://src.fedoraproject.org/rpms/expat/c/4da0543472

(cherry picked from python3.15 commit ce1bde3e67443b7cf5df33bf58cb2ec75cc2c8e2)

00462-fix-pyssl_seterror-handling-ssl_error_syscall.patch

@@ -22,10 +22,10 @@ Co-authored-by: Petr Viktorin <encukou@gmail.com>
  create mode 100644 Misc/NEWS.d/next/Library/2024-02-18-09-50-31.gh-issue-115627.HGchj0.rst
 
 diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
-index 0f1397de73..21d3676c22 100644
+index f4bba8ff03..f772bd6ab6 100644
 --- a/Lib/test/test_ssl.py
 +++ b/Lib/test/test_ssl.py
-@@ -2605,16 +2605,18 @@ def run(self):
+@@ -2607,16 +2607,18 @@ def run(self):
                          self.write(msg.lower())
                  except OSError as e:
                      # handles SSLError and socket errors
@@ -53,7 +53,7 @@ index 0f1397de73..21d3676c22 100644
                      try:
                          self.write(b"ERROR\n")
                      except OSError:
-@@ -3296,23 +3298,16 @@ def test_wrong_cert_tls13(self):
+@@ -3298,23 +3300,16 @@ def test_wrong_cert_tls13(self):
               client_context.wrap_socket(socket.socket(),
                                          server_hostname=hostname,
                                          suppress_ragged_eofs=False) as s:
@@ -82,7 +82,7 @@ index 0f1397de73..21d3676c22 100644
  
      def test_rude_shutdown(self):
          """A brutal shutdown of an SSL server should raise an OSError
-@@ -4558,8 +4553,8 @@ def msg_cb(conn, direction, version, content_type, msg_type, data):
+@@ -4560,8 +4555,8 @@ def msg_cb(conn, direction, version, content_type, msg_type, data):
                  # test sometimes fails with EOF error. Test passes as long as
                  # server aborts connection with an error.
                  with self.assertRaisesRegex(
@@ -102,7 +102,7 @@ index 0000000000..75d926ab59
 +Fix the :mod:`ssl` module error handling of connection terminate by peer.
 +It now throws an OSError with the appropriate error code instead of an EOFError.
 diff --git a/Modules/_ssl.c b/Modules/_ssl.c
-index 6852cc363b..91bf27bfef 100644
+index af770c7f18..7b3cf61474 100644
 --- a/Modules/_ssl.c
 +++ b/Modules/_ssl.c
 @@ -582,7 +582,7 @@ PySSL_ChainExceptions(PySSLSocket *sslsock) {

00474-cve-2025-15366.patch

@@ -0,0 +1,61 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Seth Michael Larson <seth@python.org>
+Date: Tue, 20 Jan 2026 14:45:42 -0600
+Subject: 00474: CVE-2025-15366
+
+gh-143921: Reject control characters in IMAP commands
+
+(cherry-picked from commit 6262704b134db2a4ba12e85ecfbd968534f28b45)
+---
+ Lib/imaplib.py                                              | 4 +++-
+ Lib/test/test_imaplib.py                                    | 6 ++++++
+ .../Security/2026-01-16-11-41-06.gh-issue-143921.AeCOor.rst | 1 +
+ 3 files changed, 10 insertions(+), 1 deletion(-)
+ create mode 100644 Misc/NEWS.d/next/Security/2026-01-16-11-41-06.gh-issue-143921.AeCOor.rst
+
+diff --git a/Lib/imaplib.py b/Lib/imaplib.py
+index 54122f985b..9ab8e43bbf 100644
+--- a/Lib/imaplib.py
++++ b/Lib/imaplib.py
+@@ -132,7 +132,7 @@
+ # We compile these in _mode_xxx.
+ _Literal = br'.*{(?P<size>\d+)}$'
+ _Untagged_status = br'\* (?P<data>\d+) (?P<type>[A-Z-]+)( (?P<data2>.*))?'
+-
++_control_chars = re.compile(b'[\x00-\x1F\x7F]')
+ 
+ 
+ class IMAP4:
+@@ -994,6 +994,8 @@ def _command(self, name, *args):
+             if arg is None: continue
+             if isinstance(arg, str):
+                 arg = bytes(arg, self._encoding)
++            if _control_chars.search(arg):
++                raise ValueError("Control characters not allowed in commands")
+             data = data + b' ' + arg
+ 
+         literal = self.literal
+diff --git a/Lib/test/test_imaplib.py b/Lib/test/test_imaplib.py
+index f817707743..9ce59b3040 100644
+--- a/Lib/test/test_imaplib.py
++++ b/Lib/test/test_imaplib.py
+@@ -505,6 +505,12 @@ def test_login(self):
+         self.assertEqual(data[0], b'LOGIN completed')
+         self.assertEqual(client.state, 'AUTH')
+ 
++    def test_control_characters(self):
++        client, _ = self._setup(SimpleIMAPHandler)
++        for c0 in support.control_characters_c0():
++            with self.assertRaises(ValueError):
++                client.login(f'user{c0}', 'pass')
++
+     def test_logout(self):
+         client, _ = self._setup(SimpleIMAPHandler)
+         typ, data = client.login('user', 'pass')
+diff --git a/Misc/NEWS.d/next/Security/2026-01-16-11-41-06.gh-issue-143921.AeCOor.rst b/Misc/NEWS.d/next/Security/2026-01-16-11-41-06.gh-issue-143921.AeCOor.rst
+new file mode 100644
+index 0000000000..4e13fe92bc
+--- /dev/null
++++ b/Misc/NEWS.d/next/Security/2026-01-16-11-41-06.gh-issue-143921.AeCOor.rst
+@@ -0,0 +1 @@
++Reject control characters in IMAP commands.

00475-cve-2025-15367.patch

@@ -0,0 +1,61 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Seth Michael Larson <seth@python.org>
+Date: Tue, 20 Jan 2026 14:46:32 -0600
+Subject: 00475: CVE-2025-15367
+
+gh-143923: Reject control characters in POP3 commands
+
+(cherry-picked from commit b234a2b67539f787e191d2ef19a7cbdce32874e7)
+---
+ Lib/poplib.py                                             | 2 ++
+ Lib/test/test_poplib.py                                   | 8 ++++++++
+ .../2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst        | 1 +
+ 3 files changed, 11 insertions(+)
+ create mode 100644 Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst
+
+diff --git a/Lib/poplib.py b/Lib/poplib.py
+index 0f8587317c..f563030f7f 100644
+--- a/Lib/poplib.py
++++ b/Lib/poplib.py
+@@ -122,6 +122,8 @@ def _putline(self, line):
+     def _putcmd(self, line):
+         if self._debugging: print('*cmd*', repr(line))
+         line = bytes(line, self.encoding)
++        if re.search(b'[\x00-\x1F\x7F]', line):
++            raise ValueError('Control characters not allowed in commands')
+         self._putline(line)
+ 
+ 
+diff --git a/Lib/test/test_poplib.py b/Lib/test/test_poplib.py
+index 1220ca32ef..2655e366fd 100644
+--- a/Lib/test/test_poplib.py
++++ b/Lib/test/test_poplib.py
+@@ -12,6 +12,7 @@
+ import unittest
+ from unittest import TestCase, skipUnless
+ from test import support as test_support
++from test.support import control_characters_c0
+ from test.support import hashlib_helper
+ from test.support import socket_helper
+ from test.support import threading_helper
+@@ -365,6 +366,13 @@ def test_quit(self):
+         self.assertIsNone(self.client.sock)
+         self.assertIsNone(self.client.file)
+ 
++    def test_control_characters(self):
++        for c0 in control_characters_c0():
++            with self.assertRaises(ValueError):
++                self.client.user(f'user{c0}')
++            with self.assertRaises(ValueError):
++                self.client.pass_(f'{c0}pass')
++
+     @requires_ssl
+     def test_stls_capa(self):
+         capa = self.client.capa()
+diff --git a/Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst b/Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst
+new file mode 100644
+index 0000000000..3cde4df3e0
+--- /dev/null
++++ b/Misc/NEWS.d/next/Security/2026-01-16-11-43-47.gh-issue-143923.DuytMe.rst
+@@ -0,0 +1 @@
++Reject control characters in POP3 commands.

00494-increase-the-timeout-of-test_large_content_length_truncated.patch

@@ -0,0 +1,23 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Karolina Surma <ksurma@redhat.com>
+Date: Fri, 14 Aug 2026 09:38:26 +0200
+Subject: 00494: Increase the timeout of test_large_content_length_truncated
+
+It has started to fail randomly when run on s390x architecture.
+---
+ Lib/test/test_httpservers.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Lib/test/test_httpservers.py b/Lib/test/test_httpservers.py
+index 5eb3c82fbd..aa8ad1c323 100644
+--- a/Lib/test/test_httpservers.py
++++ b/Lib/test/test_httpservers.py
+@@ -872,7 +872,7 @@ def test_large_content_length(self):
+             self.assertEqual(res.read(), b'%d %d' % (size, size) + self.linesep)
+ 
+     def test_large_content_length_truncated(self):
+-        with support.swap_attr(self.request_handler, 'timeout', 0.001):
++        with support.swap_attr(self.request_handler, 'timeout', support.LOOPBACK_TIMEOUT):
+             for w in range(18, 65):
+                 size = 1 << w
+                 headers = {'Content-Length' : str(size)}

plan.fmf

@@ -34,6 +34,9 @@ discover:
     - name: marshalparser
       path: /marshalparser
       test: "VERSION=${pybasever} SAMPLE=10 ./test_marshalparser_compatibility.sh"
+    - name: required_symbols
+      path: /required-symbols
+      test: "VERSION=${pybasever} ./check.sh"
 
 prepare:
   - name: Install dependencies
@@ -50,8 +53,9 @@ prepare:
     - virtualenv  # for virtualenv tests
     - glibc-all-langpacks # for locale tests
     - marshalparser  # for testing compatibility (magic numbers) with marshalparser
+    - binutils  # for nm (symbol inspection)
     - rpm  # for debugging
-    - dnf  # for upgrade
+    - dnf  # for upgrade and downgrade
   - name: Update packages
     how: shell
     script: dnf upgrade -y

python3.10.spec

@@ -13,7 +13,7 @@ URL: https://www.python.org/
 
 #  WARNING  When rebasing to a new Python version,
 #           remember to update the python3-docs package as well
-%global general_version %{pybasever}.19
+%global general_version %{pybasever}.21
 #global prerel ...
 %global upstream_version %{general_version}%{?prerel}
 Version: %{general_version}%{?prerel:~%{prerel}}
@@ -192,8 +192,7 @@ BuildRequires: bluez-libs-devel
 BuildRequires: bzip2
 BuildRequires: bzip2-devel
 BuildRequires: desktop-file-utils
-# See the runtime requirement in the -libs subpackage
-BuildRequires: expat-devel >= 2.6
+BuildRequires: expat-devel
 
 BuildRequires: findutils
 BuildRequires: gcc-c++
@@ -217,7 +216,6 @@ BuildRequires: make
 BuildRequires: mpdecimal-devel
 BuildRequires: ncurses-devel
 
-BuildRequires: openssl-devel
 BuildRequires: pkgconfig
 BuildRequires: readline-devel
 BuildRequires: redhat-rpm-config >= 127
@@ -230,6 +228,10 @@ BuildRequires: tix-devel
 BuildRequires: tk-devel < 1:9
 BuildRequires: tzdata
 
+# Support for OpenSSL 4 only landed in Python 3.15 for now
+# https://github.com/python/cpython/issues/146207
+BuildRequires: (openssl-devel < 1:4 or openssl3-devel)
+
 %if %{with valgrind}
 BuildRequires: valgrind-devel
 %endif
@@ -246,6 +248,9 @@ BuildRequires: /usr/sbin/ifconfig
 %if %{with rpmwheels}
 BuildRequires: %{python_wheel_pkg_prefix}-setuptools-wheel
 BuildRequires: %{python_wheel_pkg_prefix}-pip-wheel
+%else
+# For %%python_wheel_inject_sbom
+BuildRequires: python-rpm-macros
 %endif
 
 %if %{without bootstrap}
@@ -348,6 +353,28 @@ Patch452: 00452-properly-apply-exported-cflags-for-dtrace-systemtap-builds.patch
 # stressed on OpenSSL 3.5.
 Patch462: 00462-fix-pyssl_seterror-handling-ssl_error_syscall.patch
 
+# 00474 # 837ddca0372fa87ff9cee47142200caa21e77def
+# CVE-2025-15366
+#
+# gh-143921: Reject control characters in IMAP commands
+#
+# (cherry-picked from commit 6262704b134db2a4ba12e85ecfbd968534f28b45)
+Patch474: 00474-cve-2025-15366.patch
+
+# 00475 # 3748209a316662d4e85981ca1a7418547a1d25c6
+# CVE-2025-15367
+#
+# gh-143923: Reject control characters in POP3 commands
+#
+# (cherry-picked from commit b234a2b67539f787e191d2ef19a7cbdce32874e7)
+Patch475: 00475-cve-2025-15367.patch
+
+# 00494 # 430aab133397ed44cc9ee621fd311e02fee317b5
+# Increase the timeout of test_large_content_length_truncated
+#
+# It has started to fail randomly when run on s390x architecture.
+Patch494: 00494-increase-the-timeout-of-test_large_content_length_truncated.patch
+
 # (New patches go here ^^^)
 #
 # When adding new patches to "python" and "python3" in Fedora, EL, etc.,
@@ -494,12 +521,24 @@ Recommends: (%{pkgname}-tkinter%{?_isa} = %{version}-%{release} if tk%{?_isa})
 Requires: tzdata
 
 # The requirement on libexpat is generated, but we need to version it.
-# When built with expat >= 2.6, but installed with older expat, we get:
+# When built with a specific expat version, but installed with an older one,
+# we sometimes get:
 #   ImportError: /usr/lib64/python3.X/lib-dynload/pyexpat.cpython-....so:
-#   undefined symbol: XML_SetReparseDeferralEnabled
+#   undefined symbol: XML_...
+# The pyexpat module has build-time checks for expat version to only use the
+# available symbols. However, there is no runtime protection, so when the module
+# is later installed with an older expat, it may error due to undefined symbols.
 # This breaks many things, including python -m venv.
+# We avoid this problem by requiring at least the same version of expat that
+# was used during the build time.
 # Other subpackages (like -debug) also need this, but they all depend on -libs.
-Requires: expat >= 2.6
+# Since expat 2.7.4, the library has versioned symbols and this is no longer needed,
+# as the generated requirement will be in the form of libexpat.so.1(LIBEXPAT_2.7.2) etc.
+%global expat_version %(LANG=C rpm -q --qf '%%{version}' expat.%{_target_cpu} | sed 's/.*not installed/0/')
+%if v"%{expat_version}" < v"2.7.4"
+Requires: expat%{?_isa} >= %{expat_version}
+%endif
+
 
 # Since patch 251 changed from distutils to sysconfig, pip needed to be adapted
 # The previous versions could cause serious bugs during `sudo pip install --upgrade ...`
@@ -1064,6 +1103,11 @@ for file in %{buildroot}%{pylibdir}/pydoc_data/topics.py $(grep --include='*.py'
     rm ${directory}/{__pycache__/${module}.cpython-%{pyshortver}.opt-?.pyc,${module}.py}
 done
 
+%if %{without rpmwheels}
+# Inject SBOM into the installed wheels (if the macro is available)
+%{?python_wheel_inject_sbom:%python_wheel_inject_sbom %{buildroot}%{pylibdir}/ensurepip/_bundled/*.whl}
+%endif
+
 # ======================================================
 # Checks for packaging issues
 # ======================================================
@@ -1634,6 +1678,32 @@ CheckPython optimized
 # ======================================================
 
 %changelog
+* Thu Aug 13 2026 Karolina Surma <ksurma@redhat.com> - 3.10.21-1
+- Update to Python 3.10.21
+
+* Thu Jul 30 2026 Miro Hrončok <mhroncok@redhat.com> - 3.10.20-4
+ - Skip UDP Lite tests if it's not supported
+ - Fixes FTBFS on Linux kernel 7.1 and newer
+
+* Thu Jul 16 2026 Fedora Release Engineering <releng@fedoraproject.org> - 3.10.20-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild
+
+* Sat Apr 11 2026 Miro Hrončok <mhroncok@redhat.com> - 3.10.20-2
+- Explicitly build with OpenSSL 3
+- Fix ssl.SSLError: [ASN1: NOT_ENOUGH_DATA] not enough data with OpenSSL 3.5.7+
+
+* Tue Mar 03 2026 Tomáš Hrnčiar <thrnciar@redhat.com> - 3.10.20-1
+- Update to 3.10.20
+
+* Mon Feb 09 2026 Tomáš Hrnčiar <thrnciar@redhat.com> - 3.10.19-4
+- Security fixes for CVE-2026-0865, CVE-2025-15366 and CVE-2025-15367
+
+* Sat Jan 17 2026 Fedora Release Engineering <releng@fedoraproject.org> - 3.10.19-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild
+
+* Tue Jan 06 2026 Karolina Surma <ksurma@redhat.com> - 3.10.19-2
+- Require at least the same expat version as used during the build time
+
 * Fri Oct 10 2025 Karolina Surma <ksurma@redhat.com> - 3.10.19-1
 - Update to Python 3.10.19
 

sources

@@ -1,2 +1,2 @@
-SHA512 (Python-3.10.19.tar.xz) = 9ea1e952bb5f7c9cc8d3efd8e7ae0059c129b6e09d12ded7d4e22476fad35f2c8186b1e003ea35a0099ffa5ff0a114985c3e960fba84e7037670b840a3e19c68
-SHA512 (Python-3.10.19.tar.xz.asc) = 64bcee68c2f4e0718daaf19d405f4a5bd0ce3fc3d13bb5cbae8d4a36e419dd104c94323b497f1d06110f6b62a1b3b351279c534145f4e8cea9af0d7bb0a8b5c9
+SHA512 (Python-3.10.21.tar.xz) = 6f6de7c5e4c0457f2d189ed5d111c83fb8775e19123afe4f9fd0ae2b93f3fa2bbb7ad849ade6bb5227d4a6a3d63abc8e167fbe5fb54fa715660c89fd6274daee
+SHA512 (Python-3.10.21.tar.xz.asc) = 72d6aeaa0f51e527f82392cf1f969b0ad50a48fe10e8b7e5feb6117718223d00757f7b375b3ac82e257571d5a61f8162e9dd59b81fcf8f2a441c6deb42be71cb