SUSE-SU-2026:2298-1: moderate: Security update for python311

[SLE-UPDATES]

# Security update for python311

Announcement ID: SUSE-SU-2026:2298-1  
Release Date: 2026-06-08T10:17:21Z  
Rating: moderate  
References:

  * bsc#1258364
  * bsc#1261970

  
Cross-References:

  * CVE-2026-3446

  
CVSS scores:

  * CVE-2026-3446 ( SUSE ):  6.0
    CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-3446 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-3446 ( NVD ):  6.0
    CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

  
Affected Products:

  * Basesystem Module 15-SP7
  * openSUSE Leap 15.6
  * Python 3 Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves one vulnerability and has one security fix can now be
installed.

## Description:

This update for python311 fixes the following issues:

  * CVE-2026-3446: Base64 decoding stops at first padded quad by default
    (bsc#1261970).

## 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 15.6  
    zypper in -t patch SUSE-2026-2298=1

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2298=1

  * Python 3 Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-2298=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
    * python311-testsuite-3.11.15-150600.3.56.1
    * python311-3.11.15-150600.3.56.1
    * python311-tk-3.11.15-150600.3.56.1
    * python311-base-3.11.15-150600.3.56.1
    * python311-tk-debuginfo-3.11.15-150600.3.56.1
    * python311-base-debuginfo-3.11.15-150600.3.56.1
    * python311-devel-3.11.15-150600.3.56.1
    * python311-debuginfo-3.11.15-150600.3.56.1
    * python311-dbm-3.11.15-150600.3.56.1
    * python311-idle-3.11.15-150600.3.56.1
    * python311-testsuite-debuginfo-3.11.15-150600.3.56.1
    * python311-core-debugsource-3.11.15-150600.3.56.1
    * python311-doc-devhelp-3.11.15-150600.3.56.1
    * libpython3_11-1_0-debuginfo-3.11.15-150600.3.56.1
    * python311-curses-debuginfo-3.11.15-150600.3.56.1
    * python311-debugsource-3.11.15-150600.3.56.1
    * python311-dbm-debuginfo-3.11.15-150600.3.56.1
    * python311-curses-3.11.15-150600.3.56.1
    * python311-doc-3.11.15-150600.3.56.1
    * python311-tools-3.11.15-150600.3.56.1
    * libpython3_11-1_0-3.11.15-150600.3.56.1
  * openSUSE Leap 15.6 (aarch64_ilp32)
    * libpython3_11-1_0-64bit-3.11.15-150600.3.56.1
    * python311-64bit-debuginfo-3.11.15-150600.3.56.1
    * libpython3_11-1_0-64bit-debuginfo-3.11.15-150600.3.56.1
    * python311-base-64bit-3.11.15-150600.3.56.1
    * python311-base-64bit-debuginfo-3.11.15-150600.3.56.1
    * python311-64bit-3.11.15-150600.3.56.1
  * openSUSE Leap 15.6 (x86_64)
    * libpython3_11-1_0-32bit-debuginfo-3.11.15-150600.3.56.1
    * python311-32bit-debuginfo-3.11.15-150600.3.56.1
    * python311-base-32bit-debuginfo-3.11.15-150600.3.56.1
    * python311-base-32bit-3.11.15-150600.3.56.1
    * python311-32bit-3.11.15-150600.3.56.1
    * libpython3_11-1_0-32bit-3.11.15-150600.3.56.1
  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * libpython3_11-1_0-debuginfo-3.11.15-150600.3.56.1
    * python311-core-debugsource-3.11.15-150600.3.56.1
    * python311-base-debuginfo-3.11.15-150600.3.56.1
    * python311-base-3.11.15-150600.3.56.1
    * libpython3_11-1_0-3.11.15-150600.3.56.1
  * Python 3 Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * python311-3.11.15-150600.3.56.1
    * python311-dbm-debuginfo-3.11.15-150600.3.56.1
    * python311-tk-3.11.15-150600.3.56.1
    * python311-curses-3.11.15-150600.3.56.1
    * python311-tk-debuginfo-3.11.15-150600.3.56.1
    * python311-curses-debuginfo-3.11.15-150600.3.56.1
    * python311-dbm-3.11.15-150600.3.56.1
    * python311-debugsource-3.11.15-150600.3.56.1
    * python311-tools-3.11.15-150600.3.56.1
    * python311-core-debugsource-3.11.15-150600.3.56.1
    * python311-devel-3.11.15-150600.3.56.1
    * python311-debuginfo-3.11.15-150600.3.56.1
    * python311-idle-3.11.15-150600.3.56.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-3446.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1258364
  * https://bugzilla.suse.com/show_bug.cgi?id=1261970

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