Out-of-bounds Read Affecting python3.12-tkinter package, versions <0:3.12.12-4.0.1.el9_7


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.2% (42nd percentile)

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  • Snyk IDSNYK-ORACLE9-PYTHON312TKINTER-15148106
  • published30 Jan 2026
  • disclosed1 Dec 2025

Introduced: 1 Dec 2025

CVE-2025-13836  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Oracle:9 python3.12-tkinter to version 0:3.12.12-4.0.1.el9_7 or higher.
This issue was patched in ELSA-2026-1408.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.12-tkinter package and not the python3.12-tkinter package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.

CVSS Base Scores

version 3.1