Use After Free Affecting python39-tkinter package, versions <0:3.9.25-2.module+el8.10.0+23718+1842ae33


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.21% (44th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Use After Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS8-PYTHON39TKINTER-10652918
  • published7 Jul 2025
  • disclosed15 May 2025

Introduced: 15 May 2025

CVE-2025-4516  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:8 python39-tkinter to version 0:3.9.25-2.module+el8.10.0+23718+1842ae33 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39-tkinter package and not the python39-tkinter package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

There is an issue in CPython when using bytes.decode(&#34;unicode_escape&#34;, error=&#34;ignore|replace&#34;). If you are not using the "unicode_escape" encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError.

CVSS Base Scores

version 3.1