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* Python 3.9.23v3.9.23Łukasz Langa2025-06-031-2/+2
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* [3.9] gh-133767: Fix use-after-free in the unicode-escape decoder with an ↵Serhiy Storchaka2025-06-022-0/+17
| | | | | | | | | | | | | | | | | | | | | | | error handler (GH-129648) (GH-133944) (#134346) * [3.9] gh-133767: Fix use-after-free in the unicode-escape decoder with an error handler (GH-129648) (GH-133944) If the error handler is used, a new bytes object is created to set as the object attribute of UnicodeDecodeError, and that bytes object then replaces the original data. A pointer to the decoded data will became invalid after destroying that temporary bytes object. So we need other way to return the first invalid escape from _PyUnicode_DecodeUnicodeEscapeInternal(). _PyBytes_DecodeEscape() does not have such issue, because it does not use the error handlers registry, but it should be changed for compatibility with _PyUnicode_DecodeUnicodeEscapeInternal(). (cherry picked from commit 9f69a58623bd01349a18ba0c7a9cb1dad6a51e8e) (cherry picked from commit 6279eb8c076d89d3739a6edb393e43c7929b429d) (cherry picked from commit a75953b347716fff694aa59a7c7c2489fa50d1f5) (cherry picked from commit 0c33e5baedf18ebcb04bc41dff7cfc614d5ea5fe) (cherry picked from commit 8b528cacbbde60504f6ac62784d04889d285f18b) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* Post 3.9.22Łukasz Langa2025-04-081-1/+1
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* Python 3.9.22v3.9.22Łukasz Langa2025-04-081-2/+2
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* Post 3.9.21Łukasz Langa2024-12-031-1/+1
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* Python 3.9.21v3.9.21Łukasz Langa2024-12-031-2/+2
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* Post 3.9.20.Łukasz Langa2024-09-061-1/+1
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* Python 3.9.20v3.9.20Łukasz Langa2024-09-061-2/+2
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* Post 3.9.19Łukasz Langa2024-03-191-1/+1
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* Python 3.9.19v3.9.19Łukasz Langa2024-03-191-2/+2
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* [3.9] gh-115398: Expose Expat >=2.6.0 reparse deferral API (CVE-2023-52425) ↵Sebastian Pipping2024-03-061-1/+3
| | | | | | | | | | | | | | | | | | (GH-115623) (GH-116272) Allow controlling Expat >=2.6.0 reparse deferral (CVE-2023-52425) by adding five new methods: - `xml.etree.ElementTree.XMLParser.flush` - `xml.etree.ElementTree.XMLPullParser.flush` - `xml.parsers.expat.xmlparser.GetReparseDeferralEnabled` - `xml.parsers.expat.xmlparser.SetReparseDeferralEnabled` - `xml.sax.expatreader.ExpatParser.flush` Based on the "flush" idea from https://github.com/python/cpython/pull/115138#issuecomment-1932444270 . Includes code suggested-by: Snild Dolkow <snild@sony.com> and by core dev Serhiy Storchaka. Co-authored-by: Gregory P. Smith <greg@krypto.org>
* Post 3.9.18Łukasz Langa2023-08-241-1/+1
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* Python 3.9.18v3.9.18Łukasz Langa2023-08-241-2/+2
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* Post 3.9.17Łukasz Langa2023-06-061-1/+1
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* Python 3.9.17v3.9.17Łukasz Langa2023-06-061-2/+2
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* Post 3.9.16Łukasz Langa2022-12-061-1/+1
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* Python 3.9.16v3.9.16Łukasz Langa2022-12-061-2/+2
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* Post 3.9.15Łukasz Langa2022-10-111-1/+1
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* Python 3.9.15v3.9.15Łukasz Langa2022-10-111-2/+2
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* Post 3.9.14Łukasz Langa2022-09-061-1/+1
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* Python 3.9.14v3.9.14Łukasz Langa2022-09-061-2/+2
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* [3.9] gh-95778: CVE-2020-10735: Prevent DoS by very large int() (#96502)Gregory P. Smith2022-09-053-0/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Correctly pre-check for int-to-str conversion (#96537) Converting a large enough `int` to a decimal string raises `ValueError` as expected. However, the raise comes _after_ the quadratic-time base-conversion algorithm has run to completion. For effective DOS prevention, we need some kind of check before entering the quadratic-time loop. Oops! =) The quick fix: essentially we catch _most_ values that exceed the threshold up front. Those that slip through will still be on the small side (read: sufficiently fast), and will get caught by the existing check so that the limit remains exact. The justification for the current check. The C code check is: ```c max_str_digits / (3 * PyLong_SHIFT) <= (size_a - 11) / 10 ``` In GitHub markdown math-speak, writing $M$ for `max_str_digits`, $L$ for `PyLong_SHIFT` and $s$ for `size_a`, that check is: $$\left\lfloor\frac{M}{3L}\right\rfloor \le \left\lfloor\frac{s - 11}{10}\right\rfloor$$ From this it follows that $$\frac{M}{3L} < \frac{s-1}{10}$$ hence that $$\frac{L(s-1)}{M} > \frac{10}{3} > \log_2(10).$$ So $$2^{L(s-1)} > 10^M.$$ But our input integer $a$ satisfies $|a| \ge 2^{L(s-1)}$, so $|a|$ is larger than $10^M$. This shows that we don't accidentally capture anything _below_ the intended limit in the check. <!-- gh-issue-number: gh-95778 --> * Issue: gh-95778 <!-- /gh-issue-number --> Co-authored-by: Gregory P. Smith [Google LLC] <greg@krypto.org> Co-authored-by: Christian Heimes <christian@python.org> Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
* gh-93065: Fix HAMT to iterate correctly over 7-level deep trees (GH-93066) ↵Miss Islington (bot)2022-05-241-1/+13
| | | | | | | | | | | | (#93147) Also while there, clarify a few things about why we reduce the hash to 32 bits. Co-authored-by: Eli Libman <eli@hyro.ai> Co-authored-by: Yury Selivanov <yury@edgedb.com> Co-authored-by: Łukasz Langa <lukasz@langa.pl> (cherry picked from commit c1f5c903a7e4ed27190488f4e33b00d3c3d952e5)
* Post 3.9.13Łukasz Langa2022-05-171-1/+1
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* Python 3.9.13v3.9.13Łukasz Langa2022-05-171-2/+2
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* Post 3.9.12Łukasz Langa2022-03-241-1/+1
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* Python 3.9.12v3.9.12Łukasz Langa2022-03-231-2/+2
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* Post 3.9.11, take twoŁukasz Langa2022-03-161-1/+1
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* Python 3.9.11, take twov3.9.11Łukasz Langa2022-03-161-1/+1
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* Post 3.9.11Łukasz Langa2022-03-151-1/+1
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* Python 3.9.11Łukasz Langa2022-03-151-2/+2
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* Post 3.9.10Łukasz Langa2022-01-141-1/+1
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* Python 3.9.10v3.9.10Łukasz Langa2022-01-131-2/+2
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* bpo-39026: Fix Python.h when building with Xcode (GH-29488) (GH-29776)Victor Stinner2021-11-262-4/+1
| | | | | | Fix Python.h to build C extensions with Xcode: remove a relative include from Include/cpython/pystate.h. (cherry picked from commit 4ae26b9c1d0c33e3db92c6f305293f9240dea358)
* [3.9] bpo-45806: Fix recovery from stack overflow for 3.9. Again. (GH-29640)Mark Shannon2021-11-191-16/+0
| | | Co-authored-by: Łukasz Langa <lukasz@langa.pl>
* Post 3.9.9Łukasz Langa2021-11-151-1/+1
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* Python 3.9.9v3.9.9Łukasz Langa2021-11-151-2/+2
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* Post 3.9.8Łukasz Langa2021-11-051-1/+1
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* Python 3.9.8v3.9.8Łukasz Langa2021-11-051-2/+2
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* bpo-45467: Fix IncrementalDecoder and StreamReader in the ↵Serhiy Storchaka2021-10-141-0/+8
| | | | | | | | | | "raw-unicode-escape" codec (GH-28944) (GH-28953) They support now splitting escape sequences between input chunks. Add the third parameter "final" in codecs.raw_unicode_escape_decode(). It is True by default to match the former behavior. (cherry picked from commit 39aa98346d5dd8ac591a7cafb467af21c53f1e5d)
* [3.9] bpo-45461: Fix IncrementalDecoder and StreamReader in the ↵Serhiy Storchaka2021-10-141-1/+9
| | | | | | | | | | | | "unicode-escape" codec (GH-28939) (GH-28945) They support now splitting escape sequences between input chunks. Add the third parameter "final" in codecs.unicode_escape_decode(). It is True by default to match the former behavior. (cherry picked from commit c96d1546b11b4c282a7e21737cb1f5d16349656d) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
* [3.9] Fix typos in the Include directory (GH-28745) (GH-28788)Christian Clauss2021-10-074-5/+5
| | | (cherry picked from commit 8e8f7522171ef82f2f5049940f815e00e38c6f42)
* [3.9] Remove trailing spaces (GH-28710)Serhiy Storchaka2021-10-031-1/+1
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* closes bpo-44751: Move crypt.h include from public header to _cryptmodule ↵Miss Islington (bot)2021-09-291-13/+0
| | | | | | | | (GH-27394) Automerge-Triggered-By: GH:benjaminp (cherry picked from commit 196998e220d6ca030e5a1c8ad63fcaed8e049a98) Co-authored-by: Geoffrey Thomas <geofft@ldpreload.com>
* [3.9] [codemod] Fix non-matching bracket pairs (GH-28473) (GH-28512)Łukasz Langa2021-09-221-1/+1
| | | | | | | | Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu> Co-authored-by: Serhiy Storchaka <storchaka@gmail.com> Co-authored-by: Łukasz Langa <lukasz@langa.pl>. (cherry picked from commit 8f943ca25732d548cf9f0b0393ba8d582fb93e29) Co-authored-by: Mohamad Mansour <66031317+mohamadmansourX@users.noreply.github.com>
* [3.9] bpo-45083: Include the exception class qualname when formatting an ↵Miss Islington (bot)2021-09-031-0/+3
| | | | | | | | | | | exception (GH-28119) (GH-28135) * bpo-45083: Include the exception class qualname when formatting an exception (GH-28119) Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no> (cherry picked from commit b4b6342848ec0459182a992151099252434cc619) Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com> Co-authored-by: Łukasz Langa <lukasz@langa.pl>
* Post 3.9.7Łukasz Langa2021-08-301-1/+1
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* Python 3.9.7v3.9.7Łukasz Langa2021-08-301-2/+2
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* bpo-44184: Fix subtype_dealloc() for freed type (GH-26274)Miss Islington (bot)2021-07-151-1/+1
| | | | | | | | | | | | Fix a crash at Python exit when a deallocator function removes the last strong reference to a heap type. Don't read type memory after calling basedealloc() since basedealloc() can deallocate the type and free its memory. _PyMem_IsPtrFreed() argument is now constant. (cherry picked from commit 615069eb08494d089bf24e43547fbc482ed699b8) Co-authored-by: Victor Stinner <vstinner@python.org>
* Post 3.9.6Łukasz Langa2021-06-281-1/+1
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