RHSA-2026:52400: Important: python3 security update

Published Aug 10, 2026
·
Updated

Important: python3 security update

Other sources

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.Security Fix(es): python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules (CVE-2026-6100) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

— Red Hat

Affected Software

28 affected componentsFixes available
Red Hat Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)
Red Hat Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian
Red Hat Red Hat Enterprise Linux Server - Extended Life Cycle Support
Red Hat Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian
redhat/python3<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-debug<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-debug<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-debuginfo<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-debuginfo<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-devel<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-devel<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-idle<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-idle<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-libs<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-libs<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-test<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-test<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-tkinter<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-tkinter<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-debug<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-debuginfo<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-devel<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-idle<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-libs<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-test<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7
redhat/python3-tkinter<3.6.8-21.el7_9.7
3.6.8-21.el7_9.7

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/python3 to a version that resolves this vulnerability.

    Fixed in 3.6.8-21.el7_9.7
  2. Upgrade

    Upgrade redhat/python3-debug to a version that resolves this vulnerability.

    Fixed in 3.6.8-21.el7_9.7
  3. Upgrade

    Upgrade redhat/python3-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.6.8-21.el7_9.7
  4. Upgrade

    Upgrade redhat/python3-devel to a version that resolves this vulnerability.

    Fixed in 3.6.8-21.el7_9.7
  5. Upgrade

    Upgrade redhat/python3-idle to a version that resolves this vulnerability.

    Fixed in 3.6.8-21.el7_9.7
  6. Upgrade

    Upgrade redhat/python3-libs to a version that resolves this vulnerability.

    Fixed in 3.6.8-21.el7_9.7
  7. Upgrade

    Upgrade redhat/python3-test to a version that resolves this vulnerability.

    Fixed in 3.6.8-21.el7_9.7
  8. Upgrade

    Upgrade redhat/python3-tkinter to a version that resolves this vulnerability.

    Fixed in 3.6.8-21.el7_9.7

Event History

Aug 10, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·12:55 AM
Data Sourced
via Red Hat·12:55 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:52400?

The severity of RHSA-2026:52400 is classified as high, with a score of 7.

2

How do I fix RHSA-2026:52400?

To fix RHSA-2026:52400, you should update the affected Python3 packages to the latest versions available.

3

What software is affected by RHSA-2026:52400?

The software affected by RHSA-2026:52400 includes various Python3 packages such as redhat/python3, redhat/python3-devel, and redhat/python3-libs.

4

What type of vulnerability is addressed in RHSA-2026:52400?

RHSA-2026:52400 addresses a 'Use After Free' vulnerability in Python3.

5

When was RHSA-2026:52400 published?

RHSA-2026:52400 was published on August 10, 2026.

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