gh-146059: Call fast_save_leave() in pickle save_frozenset() (GH-146173)
Add more pickle tests: test also nested structures.
(cherry picked from commit 5c0dcb3e0d)
Co-authored-by: Victor Stinner <vstinner@python.org>
Use uniform standard signature syntax in the tutorial and in
the array and collections modules documentation.
(cherry picked from commit 17070f41d4)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-145633: Fix struct.pack('f') on s390x (#146422)
Use PyFloat_Pack4() to raise OverflowError.
Add more tests on packing/unpacking floats.
(cherry picked from commit 8de70b31c5)
Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
Base64 decoder (see binascii.a2b_base64(), base64.b64decode(), etc)
no longer ignores excess data after the first padded quad in non-strict
(default) mode. Instead, in conformance with RFC 4648, it ignores the
pad character, "=", if it is present before the end of the encoded data.
(cherry picked from commit 4561f6418a)
(cherry picked from commit e31c551216)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-146092: Raise MemoryError on allocation failure in _zoneinfo (GH-146165)
(cherry picked from commit 6450b1d142)
Co-authored-by: Victor Stinner <vstinner@python.org>
gh-146093: Fix csv _set_str(): check if PyUnicode_DecodeASCII() failed (GH-146113)
The function can fail on a memory allocation failure.
Bug reported by devdanzin.
(cherry picked from commit 724c7c8146)
Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-145986: Avoid unbound C recursion in `conv_content_model` in `pyexpat.c` (CVE 2026-4224) (GH-145987)
Fix C stack overflow (CVE-2026-4224) when an Expat parser
with a registered `ElementDeclHandler` parses inline DTD
containing deeply nested content model.
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(cherry picked from commit eb0e8be3a7)
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
* Remvoe `skip_if_unlimited_stack_size` decorator
* Remove more decorators not on this branch
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Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
(cherry picked from commit 2d35f9bc1c)
Includes test fix-up from GH-145788
(cherry picked from commit aa4240ebea)
Co-authored-by: Thomas Kowalski <thom.kowa@gmail.com>
Co-authored-by: Matt Van Horn <mvanhorn@users.noreply.github.com>
Only set the format attribute after successful (re-)initialization.
(cherry picked from commit 3f33bf83e8)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* gh-145376: Fix crashes in md5module.c
Fix a possible NULL pointer dereference in `md5module.c`.
This can only occur in error paths taken when the interpreter fails to allocate memory.
(cherry-picked from c1d7768321)
* 📜🤖 Added by blurb_it.
* Update Modules/md5module.c
---------
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
gh-145335: Fix crash when passing -1 as fd in os.pathconf (GH-145390)
(cherry picked from commit 5c3a47b94a)
Co-authored-by: AN Long <aisk@users.noreply.github.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
`_struct.c`: Fix UB from integer overflow in `prepare_s` (GH-145158)
Avoid possible undefined behaviour from signed overflow in `struct` module
As discovered via oss-fuzz.
(cherry picked from commit fd0400585e)
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
* [3.13] gh-143698: correctly check `scheduler` and `setpgroup` values for `os.posix_spawn[p]` (GH-143699)
Fix an issue where passing invalid arguments to `os.posix_spawn[p]` functions
raised a SystemError instead of a TypeError, and allow to explicitly use `None`
for `scheduler` and `setpgroup` as specified in the docs.
(cherry picked from commit 347fc438cf)
(cherry picked from commit 8b7b5a9946)
(cherry picked from commit bcabbd02f6)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
Co-authored-by: Pierre Le Marre <dev@wismill.eu>
gh-144833: Fix use-after-free in SSL module when SSL_new() fails (GH-144843)
In newPySSLSocket(), when SSL_new() returns NULL, Py_DECREF(self)
was called before _setSSLError(get_state_ctx(self), ...), causing
a use-after-free. Additionally, get_state_ctx() was called with
self (PySSLSocket*) instead of sslctx (PySSLContext*), which is
a type confusion bug.
Fix by calling _setSSLError() before Py_DECREF() and using
sslctx instead of self for get_state_ctx().
(cherry picked from commit c91638ca06)
Co-authored-by: Ramin Farajpour Cami <ramin.blackhat@gmail.com>
Lookup for CJK ideograms and Hangul syllables is now case-insensitive,
as is the case for other character names.
(cherry picked from commit e66f4a5a9c)
Co-authored-by: James <snoopjedi@gmail.com>
This was causing ucd_3_2_0.numeric() to pick up only decimal
changes between Unicode 3.2.0 and the current version.
(cherry picked from commit 3e0322ff16)
Co-authored-by: William Meehan <wmeehan@fb.com>
(cherry picked from commit d5cb9f6a9b)
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
- generate_sbom.py: Exclude the refresh script from SBOM
- Modules/expat/refresh.sh: Expand the list of manual steps
(cherry picked from commit 51d309988b)
gh-142555: Fix null pointer dereference in array.__setitem__ via re-entrant __index__ (GH-142713)
(cherry picked from commit 39f16a93ef)
Co-authored-by: AN Long <aisk@users.noreply.github.com>
gh-144100: Fix crash for POINTER(str) used in ctypes argtypes (#144108)
(cherry picked from commit 8f459255eb)
Co-authored-by: VanshAgarwal24036 <148854295+VanshAgarwal24036@users.noreply.github.com>
[3.13] gh-144023: Prevent follow_symlinks from being allowed with an fd of 0 (GH-144022)
The check was (fd > 0), should be (fd >= 0).
(cherry picked from commit fa44efa0ef)
Co-authored-by: AZero13 <gfunni234@gmail.com>
Update struct.__doc__: _Bool available unconditionally (GH-143716)
This amends commit a9296e7f3b.
(cherry picked from commit 31c81ab0a2)
Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
gh-143249: Fix buffer leak when overlapped operation fails to start on windows (GH-143250)
(cherry picked from commit 103a384bfd)
Co-authored-by: Yongtao Huang <yongtaoh2022@gmail.com>
gh-143544: Fix possible use-after-free in the JSON decoder when JSONDecodeError disappears during raising it (GH-143561)
(cherry picked from commit c315748060)
Co-authored-by: VanshAgarwal24036 <148854295+VanshAgarwal24036@users.noreply.github.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
PyObject_GetBuffer() can execute user code (e.g. via __buffer__), which may
close or otherwise mutate a BytesIO object while write() or writelines()
is in progress. This could invalidate the internal buffer and lead to a
use-after-free.
Ensure that PyObject_GetBuffer() is called before validation checks.
(cherry picked from commit 6d54b6ac7d)
Co-authored-by: zhong <60600792+superboy-zjc@users.noreply.github.com>
Previously, this could cause crash or data corruption, now concurrent calls
of methods of the same object raise RuntimeError.
(cherry picked from commit d1282efb2b)
