Out-of-bounds Write Affecting python3-tkinter package, versions <0:3.9.25-1.amzn2023.0.8


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.43% (36th percentile)

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  • Snyk IDSNYK-AMZN2023-PYTHON3TKINTER-18062585
  • published21 Jul 2026
  • disclosed8 Jun 2026

Introduced: 8 Jun 2026

CVE-2026-9669  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 python3-tkinter to version 0:3.9.25-1.amzn2023.0.8 or higher.
This issue was patched in ALAS2023-2026-1963.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-tkinter package and not the python3-tkinter package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could cause the decompressor to resume from an invalid internal state and perform out-of-bounds writes to a stack buffer. This could crash the process when processing untrusted data.

CVSS Base Scores

version 3.1