* Thu Dec 11 2025 mcepl@cepl.eu
- Update to 3.13.11:
- gh-142145: Remove quadratic behavior in xml.minidom node ID
cache clearing (CVE-2025-12084, bsc#1254997).
- gh-119451: Fix a potential memory denial of service in the
http.client module. When connecting to a malicious server,
it could cause an arbitrary amount of memory to be
allocated. This could have led to symptoms including
a MemoryError, swapping, out of memory (OOM) killed
processes or containers, or even system crashes
(bsc#1254400, CVE-2025-13836).
- gh-119452: Fix a potential memory denial of service in the
http.server module. When a malicious user is connected to
the CGI server on Windows, it could cause an arbitrary
amount of memory to be allocated. This could have led to
symptoms including a MemoryError, swapping, out of memory
(OOM) killed processes or containers, or even system
crashes.
- Library
- gh-140797: Revert changes to the undocumented re.Scanner
class. Capturing groups are still allowed for backward
compatibility, although using them can lead to incorrect
result. They will be forbidden in future Python versions.
- gh-142206: The resource tracker in the multiprocessing
module now uses the original communication protocol, as in
Python 3.14.0 and below, by default. This avoids issues
with upgrading Python while it is running. (Note that such
‘in-place’ upgrades are not tested.) The tracker remains
compatible with subprocesses that use new protocol (that
is, subprocesses using Python 3.13.10, 3.14.1 and 3.15).
- Core and Builtins
- gh-142218: Fix crash when inserting into a split table
dictionary with a non str key that matches an existing key.
- Update to 3.13.10:
- Tools/Demos
- gh-141442: The iOS testbed now correctly handles test
arguments that contain spaces.
- Tests
- gh-140482: Preserve and restore the state of stty echo as
part of the test environment.
- gh-140082: Update python -m test to set FORCE_COLOR=1 when
being run with color enabled so that unittest which is run
by it with redirected output will output in color.
- gh-136442: Use exitcode 1 instead of 5 if
unittest.TestCase.setUpClass() raises an exception
- Security
- gh-139700: Check consistency of the zip64 end of central
directory record. Support records with “zip64 extensible
data” if there are no bytes prepended to the ZIP file.
(CVE-2025-8291, bsc#1251305)
- gh-137836: Add support of the “plaintext” element, RAWTEXT
elements “xmp”, “iframe”, “noembed” and “noframes”, and
optionally RAWTEXT element “noscript” in
html.parser.HTMLParser.
- gh-136063: email.message: ensure linear complexity for
legacy HTTP parameters parsing. Patch by Bénédikt Tran.
- gh-136065: Fix quadratic complexity in
os.path.expandvars() (CVE-2025-6075, bsc#1252974).
- gh-119342: Fix a potential memory denial of service in the
plistlib module. When reading a Plist file received from
untrusted source, it could cause an arbitrary amount of
memory to be allocated. This could have led to symptoms
including a MemoryError, swapping, out of memory (OOM)
killed processes or containers, or even system crashes
(CVE-2025-13837, bsc#1254401).
- Library
- gh-74389: When the stdin being used by a subprocess.Popen
instance is closed, this is now ignored in
subprocess.Popen.communicate() instead of leaving the class
in an inconsistent state.
- gh-87512: Fix subprocess.Popen.communicate() timeout
handling on Windows when writing large input. Previously,
the timeout was ignored during stdin writing, causing the
method to block indefinitely if the child process did not
consume input quickly. The stdin write is now performed in
a background thread, allowing the timeout to be properly
enforced.
- gh-141473: When subprocess.Popen.communicate() was called
with input and a timeout and is called for a second time
after a TimeoutExpired exception before the process has
died, it should no longer hang.
- gh-59000: Fix pdb breakpoint resolution for class methods
when the module defining the class is not imported.
- gh-141570: Support file-like object raising OSError from
fileno() in color detection (_colorize.can_colorize()).
This can occur when sys.stdout is redirected.
- gh-141659: Fix bad file descriptor errors from
_posixsubprocess on AIX.
- gh-141497: ipaddress: ensure that the methods
IPv4Network.hosts() and IPv6Network.hosts() always return
an iterator.
- gh-140938: The statistics.stdev() and statistics.pstdev()
functions now raise a ValueError when the input contains an
infinity or a NaN.
- gh-124111: Updated Tcl threading configuration in _tkinter
to assume that threads are always available in Tcl 9 and
later.
- gh-137109: The os.fork and related forking APIs will no
longer warn in the common case where Linux or macOS
platform APIs return the number of threads in a process and
find the answer to be 1 even when a os.register_at_fork()
after_in_parent= callback (re)starts a thread.
- gh-141314: Fix assertion failure in io.TextIOWrapper.tell()
when reading files with standalone carriage return (\r)
line endings.
- gh-141311: Fix assertion failure in io.BytesIO.readinto()
and undefined behavior arising when read position is above
capcity in io.BytesIO.
- gh-141141: Fix a thread safety issue with
base64.b85decode(). Contributed by Benel Tayar.
- gh-140911: collections: Ensure that the methods
UserString.rindex() and UserString.index() accept
collections.UserString instances as the sub argument.
- gh-140797: The undocumented re.Scanner class now forbids
regular expressions containing capturing groups in its
lexicon patterns. Patterns using capturing groups could
previously lead to crashes with segmentation fault. Use
non-capturing groups (?:…) instead.
- gh-140815: faulthandler now detects if a frame or a code
object is invalid or freed. Patch by Victor Stinner.
- gh-100218: Correctly set errno when socket.if_nametoindex()
or socket.if_indextoname() raise an OSError. Patch by
Bénédikt Tran.
- gh-140875: Fix handling of unclosed character references
(named and numerical) followed by the end of file in
html.parser.HTMLParser with convert_charrefs=False.
- gh-140734: multiprocessing: fix off-by-one error when
checking the length of a temporary socket file path. Patch
by Bénédikt Tran.
- gh-140874: Bump the version of pip bundled in ensurepip to
version 25.3
- gh-140691: In urllib.request, when opening a FTP URL fails
because a data connection cannot be made, the control
connection’s socket is now closed to avoid
a ResourceWarning.
- gh-103847: Fix hang when cancelling process created by
asyncio.create_subprocess_exec() or
asyncio.create_subprocess_shell(). Patch by Kumar Aditya.
- gh-140590: Fix arguments checking for the
functools.partial.__setstate__() that may lead to internal
state corruption and crash. Patch by Sergey Miryanov.
- gh-140634: Fix a reference counting bug in
os.sched_param.__reduce__().
- gh-140633: Ignore AttributeError when setting a module’s
__file__ attribute when loading an extension module
packaged as Apple Framework.
- gh-140593: xml.parsers.expat: Fix a memory leak that could
affect users with ElementDeclHandler() set to a custom
element declaration handler. Patch by Sebastian Pipping.
- gh-140607: Inside io.RawIOBase.read(), validate that the
count of bytes returned by io.RawIOBase.readinto() is valid
(inside the provided buffer).
- gh-138162: Fix logging.LoggerAdapter with merge_extra=True
and without the extra argument.
- gh-140474: Fix memory leak in array.array when creating
arrays from an empty str and the u type code.
- gh-140272: Fix memory leak in the clear() method of the
dbm.gnu database.
- gh-140041: Fix import of ctypes on Android and Cygwin when
ABI flags are present.
- gh-139905: Add suggestion to error message for
typing.Generic subclasses when cls.__parameters__ is
missing due to a parent class failing to call
super().__init_subclass__() in its __init_subclass__.
- gh-139845: Fix to not print KeyboardInterrupt twice in
default asyncio REPL.
- gh-139783: Fix inspect.getsourcelines() for the case when
a decorator is followed by a comment or an empty line.
- gh-70765: http.server: fix default handling of HTTP/0.9
requests in BaseHTTPRequestHandler. Previously,
BaseHTTPRequestHandler.parse_request() incorrectly waited
for headers in the request although those are not supported
in HTTP/0.9. Patch by Bénédikt Tran.
- gh-139391: Fix an issue when, on non-Windows platforms, it
was not possible to gracefully exit a python -m asyncio
process suspended by Ctrl+Z and later resumed by fg other
than with kill.
- gh-101828: Fix 'shift_jisx0213', 'shift_jis_2004',
'euc_jisx0213' and 'euc_jis_2004' codecs truncating null
chars as they were treated as part of multi-character
sequences.
- gh-139246: fix: paste zero-width in default repl width is
wrong.
- gh-90949: Add SetAllocTrackerActivationThreshold() and
SetAllocTrackerMaximumAmplification() to xmlparser objects
to prevent use of disproportional amounts of dynamic memory
from within an Expat parser. Patch by Bénédikt Tran.
- gh-139065: Fix trailing space before a wrapped long word if
the line length is exactly width in textwrap.
- gh-138993: Dedent credits text.
- gh-138859: Fix generic type parameterization raising
a TypeError when omitting a ParamSpec that has a default
which is not a list of types.
- gh-138775: Use of python -m with base64 has been fixed to
detect input from a terminal so that it properly notices
EOF.
- gh-98896: Fix a failure in multiprocessing resource_tracker
when SharedMemory names contain colons. Patch by Rani
Pinchuk.
- gh-75989: tarfile.TarFile.extractall() and
tarfile.TarFile.extract() now overwrite symlinks when
extracting hardlinks. (Contributed by Alexander Enrique
Urieles Nieto in gh-75989.)
- gh-83424: Allows creating a ctypes.CDLL without name when
passing a handle as an argument.
- gh-136234: Fix asyncio.WriteTransport.writelines() to be
robust to connection failure, by using the same behavior as
write().
- gh-136057: Fixed the bug in pdb and bdb where next and step
can’t go over the line if a loop exists in the line.
- gh-135307: email: Fix exception in set_content() when
encoding text and max_line_length is set to 0 or None
(unlimited).
- gh-134453: Fixed subprocess.Popen.communicate() input=
handling of memoryview instances that were non-byte shaped
on POSIX platforms. Those are now properly cast to a byte
shaped view instead of truncating the input. Windows
platforms did not have this bug.
- gh-102431: Clarify constraints for “logical” arguments in
methods of decimal.Context.
- IDLE
- gh-96491: Deduplicate version number in IDLE shell title
bar after saving to a file.
- Documentation
- gh-141994: xml.sax.handler: Make Documentation of
xml.sax.handler.feature_external_ges warn of opening up to
external entity attacks. Patch by Sebastian Pipping.
- gh-140578: Remove outdated sencence in the documentation
for multiprocessing, that implied that
concurrent.futures.ThreadPoolExecutor did not exist.
- Core and Builtins
- gh-142048: Fix quadratically increasing garbage collection
delays in free-threaded build.
- gh-141930: When importing a module, use Python’s regular
file object to ensure that writes to .pyc files are
complete or an appropriate error is raised.
- gh-120158: Fix inconsistent state when enabling or
disabling monitoring events too many times.
- gh-141579: Fix sys.activate_stack_trampoline() to properly
support the perf_jit backend. Patch by Pablo Galindo.
- gh-141312: Fix the assertion failure in the __setstate__
method of the range iterator when a non-integer argument is
passed. Patch by Sergey Miryanov.
- gh-140939: Fix memory leak when bytearray or bytes is
formated with the
%*b format with a large width that results in
%a MemoryError.
- gh-140530: Fix a reference leak when raise exc from cause
fails. Patch by Bénédikt Tran.
- gh-140576: Fixed crash in tokenize.generate_tokens() in
case of specific incorrect input. Patch by Mikhail Efimov.
- gh-140551: Fixed crash in dict if dict.clear() is called at
the lookup stage. Patch by Mikhail Efimov and Inada Naoki.
- gh-140471: Fix potential buffer overflow in ast.AST node
initialization when encountering malformed _fields
containing non-str.
- gh-140406: Fix memory leak when an object’s __hash__()
method returns an object that isn’t an int.
- gh-140306: Fix memory leaks in cross-interpreter channel
operations and shared namespace handling.
- gh-140301: Fix memory leak of PyConfig in subinterpreters.
- gh-140000: Fix potential memory leak when a reference cycle
exists between an instance of typing.TypeAliasType,
typing.TypeVar, typing.ParamSpec, or typing.TypeVarTuple
and its __name__ attribute. Patch by Mikhail Efimov.
- gh-139748: Fix reference leaks in error branches of
functions accepting path strings or bytes such as compile()
and os.system(). Patch by Bénédikt Tran.
- gh-139516: Fix lambda colon erroneously start format spec
in f-string in tokenizer.
- gh-139640: Fix swallowing some syntax warnings in different
modules if they accidentally have the same message and are
emitted from the same line. Fix duplicated warnings in the
finally block.
- gh-137400: Fix a crash in the free threading build when
disabling profiling or tracing across all threads with
PyEval_SetProfileAllThreads() or
PyEval_SetTraceAllThreads() or their Python equivalents
threading.settrace_all_threads() and
threading.setprofile_all_threads().
- gh-133400: Fixed Ctrl+D (^D) behavior in _pyrepl module to
match old pre-3.13 REPL behavior.
- C API
- gh-140042: Removed the sqlite3_shutdown call that could
cause closing connections for sqlite when used with
multiple sub interpreters.
- gh-140487: Fix Py_RETURN_NOTIMPLEMENTED in limited C API
3.11 and older: don’t treat Py_NotImplemented as immortal.
Patch by Victor Stinner.
- Remove upstreamed patches:
- CVE-2025-13836-http-resp-cont-len.patch
- CVE-2025-8291-consistency-zip64.patch
- CVE-2025-6075-expandvars-perf-degrad.patch
* Wed Nov 19 2025 mcepl@suse.com
- Add pass-test_write_read_limited_history.patch:
Fix readline history truncation when length is reduced
The `readline.set_history_length()` function did not previously
truncate the in-memory history when the new length was set to
a value smaller than the current number of history items. This
could lead to unexpected behavior where `get_history_length()`
would still report the old length and writing the history to a
file would write more entries than the new limit.
This patch modifies `set_history_length()` to explicitly
remove the oldest history entries using `remove_history()`
when the length is decreased, ensuring the in-memory history
is correctly truncated to the new limit. This brings the
function's behavior in line with expectations and fixes
failures in `test_write_read_limited_history`.
* Thu Nov 13 2025 mcepl@cepl.eu
- Add CVE-2025-6075-expandvars-perf-degrad.patch avoid simple
quadratic complexity vulnerabilities of os.path.expandvars()
(CVE-2025-6075, bsc#1252974).
* Tue Nov 04 2025 mcepl@cepl.eu
- Add CVE-2025-8291-consistency-zip64.patch which checks
consistency of the zip64 end of central directory record, and
preventing obfuscation of the payload, i.e., you scanning for
malicious content in a ZIP file with one ZIP parser (let's say
a Rust one) then unpack it in production with another (e.g.,
the Python one) and get malicious content that the other parser
did not see (CVE-2025-8291, bsc#1251305)
- Readjust patches while synchronizing between openSUSE and SLE trees:
- F00251-change-user-install-location.patch
- doc-py38-to-py36.patch
- gh126985-mv-pyvenv.cfg2getpath.patch
* Wed Oct 15 2025 daniel.garcia@suse.com
- Update to 3.13.9:
- Library
- gh-139783: Fix inspect.getsourcelines() for the case when a
decorator is followed by a comment or an empty line.
- Update to 3.13.8:
- macOS
- gh-124111: Update macOS installer to use Tcl/Tk 8.6.17.
- gh-139573: Updated bundled version of OpenSSL to 3.0.18.
- Windows
- gh-139573: Updated bundled version of OpenSSL to 3.0.18.
- gh-138896: Fix error installing C runtime on non-updated Windows
machines
- Tools/Demos
- gh-139330: SBOM generation tool didn’t cross-check the version
and checksum values against the Modules/expat/refresh.sh script,
leading to the values becoming out-of-date during routine
updates.
- gh-137873: The iOS test runner has been simplified, resolving
some issues that have been observed using the runner in GitHub
Actions and Azure Pipelines test environments.
- Tests
- gh-139208: Fix regrtest --fast-ci --verbose: don’t ignore the
- -verbose option anymore. Patch by Victor Stinner.
- Security
- gh-139400: xml.parsers.expat: Make sure that parent Expat
parsers are only garbage-collected once they are no longer
referenced by subparsers created by
ExternalEntityParserCreate(). Patch by Sebastian Pipping.
- gh-139283: sqlite3: correctly handle maximum number of rows to
fetch in Cursor.fetchmany and reject negative values for
Cursor.arraysize. Patch by Bénédikt Tran.
- gh-135661: Fix CDATA section parsing in html.parser.HTMLParser
according to the HTML5 standard: ] ]> and ]] > no longer end the
CDATA section. Add private method _set_support_cdata() which can
be used to specify how to parse <[CDATA[ — as a CDATA section in
foreign content (SVG or MathML) or as a bogus comment in the
HTML namespace.
- Library
- gh-139312: Upgrade bundled libexpat to 2.7.3
- gh-139289: Do a real lazy-import on rlcompleter in pdb and
restore the existing completer after importing rlcompleter.
- gh-139210: Fix use-after-free when reporting unknown event in
xml.etree.ElementTree.iterparse(). Patch by Ken Jin.
- gh-138860: Lazy import rlcompleter in pdb to avoid deadlock in
subprocess.
- gh-112729: Fix crash when calling _interpreters.create when the
process is out of memory.
- gh-139076: Fix a bug in the pydoc module that was hiding
functions in a Python module if they were implemented in an
extension module and the module did not have __all__.
- gh-138998: Update bundled libexpat to 2.7.2
- gh-130567: Fix possible crash in locale.strxfrm() due to a
platform bug on macOS.
- gh-138779: Support device numbers larger than 2**63-1 for the
st_rdev field of the os.stat_result structure.
- gh-128636: Fix crash in PyREPL when os.environ is overwritten
with an invalid value for mac
- gh-88375: Fix normalization of the robots.txt rules and URLs in
the urllib.robotparser module. No longer ignore trailing ?.
Distinguish raw special characters ?, = and & from the
percent-encoded ones.
- gh-138515: email is added to Emscripten build.
- gh-111788: Fix parsing errors in the urllib.robotparser module.
Don’t fail trying to parse weird paths. Don’t fail trying to
decode non-UTF-8 robots.txt files.
- gh-138432: zoneinfo.reset_tzpath() will now convert any
os.PathLike objects it receives into strings before adding them
to TZPATH. It will raise TypeError if anything other than a
string is found after this conversion. If given an os.PathLike
object that represents a relative path, it will now raise
ValueError instead of TypeError, and present a more informative
error message.
- gh-138008: Fix segmentation faults in the ctypes module due to
invalid argtypes. Patch by Dung Nguyen.
- gh-60462: Fix locale.strxfrm() on Solaris (and possibly other
platforms).
- gh-138204: Forbid expansion of shared anonymous memory maps on
Linux, which caused a bus error.
- gh-138010: Fix an issue where defining a class with a
@warnings.deprecated-decorated base class may not invoke the
correct __init_subclass__() method in cases involving multiple
inheritance. Patch by Brian Schubert.
- gh-138133: Prevent infinite traceback loop when sending CTRL^C
to Python through strace.
- gh-134869: Fix an issue where pressing Ctrl+C during tab
completion in the REPL would leave the autocompletion menu in a
corrupted state.
- gh-137317: inspect.signature() now correctly handles classes
that use a descriptor on a wrapped __init__() or __new__()
method. Contributed by Yongyu Yan.
- gh-137754: Fix import of the zoneinfo module if the C
implementation of the datetime module is not available.
- gh-137490: Handle ECANCELED in the same way as EINTR in
signal.sigwaitinfo() on NetBSD.
- gh-137477: Fix inspect.getblock(), inspect.getsourcelines() and
inspect.getsource() for generator expressions.
- gh-137017: Fix threading.Thread.is_alive to remain True until
the underlying OS thread is fully cleaned up. This avoids false
negatives in edge cases involving thread monitoring or premature
threading.Thread.is_alive calls.
- gh-136134: SMTP.auth_cram_md5() now raises an SMTPException
instead of a ValueError if Python has been built without MD5
support. In particular, SMTP clients will not attempt to use
this method even if the remote server is assumed to support it.
Patch by Bénédikt Tran.
- gh-136134: IMAP4.login_cram_md5 now raises an IMAP4.error if
CRAM-MD5 authentication is not supported. Patch by Bénédikt
Tran.
- gh-135386: Fix opening a dbm.sqlite3 database for reading from
read-only file or directory.
- gh-126631: Fix multiprocessing forkserver bug which prevented
__main__ from being preloaded.
- gh-123085: In a bare call to importlib.resources.files(), ensure
the caller’s frame is properly detected when importlib.resources
is itself available as a compiled module only (no source).
- gh-118981: Fix potential hang in
multiprocessing.popen_spawn_posix that can happen when the child
proc dies early by closing the child fds right away.
- gh-78319: UTF8 support for the IMAP APPEND command has been made
RFC compliant.
- bpo-38735: Fix failure when importing a module from the root
directory on unix-like platforms with sys.pycache_prefix set.
- bpo-41839: Allow negative priority values from
os.sched_get_priority_min() and os.sched_get_priority_max()
functions.
- Core and Builtins
- gh-134466: Don’t run PyREPL in a degraded environment where
setting termios attributes is not allowed.
- gh-71810: Raise OverflowError for (-1).to_bytes() for signed
conversions when bytes count is zero. Patch by Sergey B
Kirpichev.
- gh-105487: Remove non-existent __copy__(), __deepcopy__(), and
__bases__ from the __dir__() entries of types.GenericAlias.
- gh-134163: Fix a hang when the process is out of memory inside
an exception handler.
- gh-138479: Fix a crash when a generic object’s __typing_subst__
returns an object that isn’t a tuple.
- gh-137576: Fix for incorrect source code being shown in
tracebacks from the Basic REPL when PYTHONSTARTUP is given.
Patch by Adam Hartz.
- gh-132744: Certain calls now check for runaway recursion and
respect the system recursion limit.
- C API
- gh-87135: Attempting to acquire the GIL after runtime
finalization has begun in a different thread now causes the
thread to hang rather than terminate, which avoids potential
crashes or memory corruption caused by attempting to terminate a
thread that is running code not specifically designed to support
termination. In most cases this hanging is harmless since the
process will soon exit anyway.
While not officially marked deprecated until 3.14,
PyThread_exit_thread is no longer called internally and remains
solely for interface compatibility. Its behavior is inconsistent
across platforms, and it can only be used safely in the unlikely
case that every function in the entire call stack has been
designed to support the platform-dependent termination
mechanism. It is recommended that users of this function change
their design to not require thread termination. In the unlikely
case that thread termination is needed and can be done safely,
users may migrate to calling platform-specific APIs such as
pthread_exit (POSIX) or _endthreadex (Windows) directly.
- Build
- gh-135734: Python can correctly be configured and built with
./configure --enable-optimizations --disable-test-modules.
Previously, the profile data generation step failed due to PGO
tests where immortalization couldn’t be properly suppressed.
Patch by Bénédikt Tran.
* Mon Sep 29 2025 daniel.garcia@suse.com
- Add gh139257-Support-docutils-0.22.patch to fix build with latest
docutils (>=0.22) gh#python/cpython#139257
* Mon Sep 22 2025 dimstar@opensuse.org
- Drop AppStream: this results in a different cycle than
appstream-glib. As the appdata.xml is controlled by ourselves, we
can get away with just manually validating it when changing it.
* Thu Sep 18 2025 dimstar@opensuse.org
- Require AppStream to validate appdata file instead of deprecated
appstream-glib.
- Update idle3.appdata.xml to pass the more pedantic appstreamcli.
* Tue Sep 09 2025 daniel.garcia@suse.com
- Add gh138131-exclude-pycache-from-digest.patch fixing reproducible
build for python-nogil.
(bsc#1244680, gh#python/cpython#138131)
* Fri Aug 15 2025 mcepl@cepl.eu
- Update to 3.13.7:
- gh-137583: Fix a deadlock introduced in 3.13.6 when a call
to ssl.SSLSocket.recv was blocked in one thread, and then
another method on the object (such as ssl.SSLSocket.send) was
subsequently called in another thread.
- gh-137044: Return large limit values as positive integers
instead of negative integers in resource.getrlimit().
Accept large values and reject negative values (except
RLIM_INFINITY) for limits in resource.setrlimit().
- gh-136914: Fix retrieval of doctest.DocTest.lineno
for objects decorated with functools.cache() or
functools.cached_property.
- gh-131788: Make ResourceTracker.send from multiprocessing
re-entrant safe
- gh-136155: We are now checking for fatal errors in EPUB
builds in CI.
- gh-137400: Fix a crash in the free threading build when
disabling profiling or tracing across all threads with
PyEval_SetProfileAllThreads() or PyEval_SetTraceAllThreads()
or their Python equivalents threading.settrace_all_threads()
and threading.setprofile_all_threads().
- Remove upstreamed patch:
- gh137583-only-lock-SSL-context.patch