SUSE-SU-2025:4433-1: moderate: Security update for python39

[SLE-SECURITY-UPDATES]

# Security update for python39

Announcement ID: SUSE-SU-2025:4433-1  
Release Date: 2025-12-17T13:20:28Z  
Rating: moderate  
References:

  
Affected Products:

  * openSUSE Leap 15.3
  * openSUSE Leap 15.6

  
  
An update that can now be installed.

## Description:

This update for python39 fixes the following issues:

  * Update to 3.9.25:
  * Security
    * 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.
  * Library
    * gh-98793: Fix argument typechecks in _overlapped.WSAConnect() and _overlapped.Overlapped.WSASendTo() functions. bpo-44817: Ignore WinError 53 (ERROR_BAD_NETPATH), 65 (ERROR_NETWORK_ACCESS_DENIED) and 161 (ERROR_BAD_PATHNAME) when using ntpath.realpath().
  * Core and Builtins
    * gh-120384: Fix an array out of bounds crash in list_ass_subscript, which could be invoked via some specificly tailored input: including concurrent modification of a list object, where one thread assigns a slice and another clears it.
    * gh-120298: Fix use-after free in list_richcompare_impl which can be invoked via some specificly tailored evil input.

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * openSUSE Leap 15.3  
    zypper in -t patch SUSE-2025-4433=1

  * openSUSE Leap 15.6  
    zypper in -t patch openSUSE-SLE-15.6-2025-4433=1

## Package List:

  * openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64 i586)
    * python39-curses-3.9.25-150300.4.87.1
    * python39-tools-3.9.25-150300.4.87.1
    * python39-debuginfo-3.9.25-150300.4.87.1
    * python39-testsuite-debuginfo-3.9.25-150300.4.87.1
    * python39-3.9.25-150300.4.87.1
    * python39-curses-debuginfo-3.9.25-150300.4.87.1
    * python39-dbm-3.9.25-150300.4.87.1
    * python39-doc-devhelp-3.9.25-150300.4.87.1
    * python39-base-3.9.25-150300.4.87.1
    * python39-idle-3.9.25-150300.4.87.1
    * python39-tk-3.9.25-150300.4.87.1
    * python39-debugsource-3.9.25-150300.4.87.1
    * libpython3_9-1_0-3.9.25-150300.4.87.1
    * python39-testsuite-3.9.25-150300.4.87.1
    * python39-devel-3.9.25-150300.4.87.1
    * python39-base-debuginfo-3.9.25-150300.4.87.1
    * python39-core-debugsource-3.9.25-150300.4.87.1
    * libpython3_9-1_0-debuginfo-3.9.25-150300.4.87.1
    * python39-doc-3.9.25-150300.4.87.1
    * python39-tk-debuginfo-3.9.25-150300.4.87.1
    * python39-dbm-debuginfo-3.9.25-150300.4.87.1
  * openSUSE Leap 15.3 (x86_64)
    * libpython3_9-1_0-32bit-debuginfo-3.9.25-150300.4.87.1
    * libpython3_9-1_0-32bit-3.9.25-150300.4.87.1
    * python39-32bit-debuginfo-3.9.25-150300.4.87.1
    * python39-base-32bit-3.9.25-150300.4.87.1
    * python39-base-32bit-debuginfo-3.9.25-150300.4.87.1
    * python39-32bit-3.9.25-150300.4.87.1
  * openSUSE Leap 15.3 (aarch64_ilp32)
    * python39-64bit-debuginfo-3.9.25-150300.4.87.1
    * python39-64bit-3.9.25-150300.4.87.1
    * python39-base-64bit-debuginfo-3.9.25-150300.4.87.1
    * python39-base-64bit-3.9.25-150300.4.87.1
    * libpython3_9-1_0-64bit-3.9.25-150300.4.87.1
    * libpython3_9-1_0-64bit-debuginfo-3.9.25-150300.4.87.1
  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    * python39-curses-3.9.25-150300.4.87.1
    * python39-core-debugsource-3.9.25-150300.4.87.1
    * python39-tools-3.9.25-150300.4.87.1
    * python39-debuginfo-3.9.25-150300.4.87.1
    * python39-testsuite-debuginfo-3.9.25-150300.4.87.1
    * python39-3.9.25-150300.4.87.1
    * python39-curses-debuginfo-3.9.25-150300.4.87.1
    * python39-dbm-3.9.25-150300.4.87.1
    * python39-doc-devhelp-3.9.25-150300.4.87.1
    * python39-base-3.9.25-150300.4.87.1
    * python39-idle-3.9.25-150300.4.87.1
    * python39-debugsource-3.9.25-150300.4.87.1
    * libpython3_9-1_0-3.9.25-150300.4.87.1
    * python39-testsuite-3.9.25-150300.4.87.1
    * python39-devel-3.9.25-150300.4.87.1
    * python39-base-debuginfo-3.9.25-150300.4.87.1
    * python39-tk-3.9.25-150300.4.87.1
    * libpython3_9-1_0-debuginfo-3.9.25-150300.4.87.1
    * python39-doc-3.9.25-150300.4.87.1
    * python39-tk-debuginfo-3.9.25-150300.4.87.1
    * python39-dbm-debuginfo-3.9.25-150300.4.87.1
  * openSUSE Leap 15.6 (x86_64)
    * libpython3_9-1_0-32bit-debuginfo-3.9.25-150300.4.87.1
    * libpython3_9-1_0-32bit-3.9.25-150300.4.87.1
    * python39-32bit-debuginfo-3.9.25-150300.4.87.1
    * python39-base-32bit-3.9.25-150300.4.87.1
    * python39-base-32bit-debuginfo-3.9.25-150300.4.87.1
    * python39-32bit-3.9.25-150300.4.87.1

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