CVE-2025-8194 Affecting python39:3.9/python39-test package, versions <0:3.9.20-2.module_el8.10.0+4040+9207bbc0


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.1% (28th percentile)

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  • Snyk IDSNYK-ALMALINUX8-PYTHON39-12446987
  • published2 Sept 2025
  • disclosed26 Aug 2025

Introduced: 26 Aug 2025

NewCVE-2025-8194  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 python39:3.9/python39-test to version 0:3.9.20-2.module_el8.10.0+4040+9207bbc0 or higher.
This issue was patched in ALSA-2025:14900.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39:3.9/python39-test package and not the python39:3.9/python39-test package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

There is a defect in the CPython “tarfile” module affecting the “TarFile” extraction and entry enumeration APIs. The tar implementation would process tar archives with negative offsets without error, resulting in an infinite loop and deadlock during the parsing of maliciously crafted tar archives.

This vulnerability can be mitigated by including the following patch after importing the “tarfile” module:  https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1

CVSS Base Scores

version 3.1