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

Not scored Published
Exploited in the wild
Not known
Fix
Available

What is SUSE-SU-2025:4433-1?

SUSE-SU-2025:4433-1 is a vulnerability in python39, published on 17 Dec 2025.

Official 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.

Which versions are affected by SUSE-SU-2025:4433-1?

Linux distribution packages (3)
python39 openSUSE:Leap 15.6All versions3.9.25-150300.4.87.1
python39-core openSUSE:Leap 15.6All versions3.9.25-150300.4.87.1
python39-documentation openSUSE:Leap 15.6All versions3.9.25-150300.4.87.1

How do I fix SUSE-SU-2025:4433-1?

Upgrade to a fixed version.

Is SUSE-SU-2025:4433-1 being exploited?

There is no known exploitation of SUSE-SU-2025:4433-1 in the wild and no public exploit code.

Sources

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