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Update to 3.13.11

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Matej Cepl
2025-12-19 18:36:21 +01:00
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-------------------------------------------------------------------
Thu Dec 11 21:36:09 UTC 2025 - Matej Cepl <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 19:21:41 UTC 2025 - Matej Cepl <mcepl@suse.com>