A vulnerability was found in MicroPython 1.22.2. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file py/objarray.c. The manipulation leads to use after free. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. Upgrading to version 1.23.0 is able to address this issue. The identifier of the patch is 4bed614e707c0644c06e117f848fa12605c711cd. It is recommended to upgrade the affected component. In micropython objarray component, when a bytes object is resized and copied into itself, it may reference memory that has already been freed.

Affected Packages

PyPI micropython-copy

Affected versions: 0 (last affected: 3.3.3.post3)

PyPI micropython-io

Affected versions: 0 (last affected: 0.1)

Related CVEs

CVE-2024-8947

Key Information

GHSA ID

GHSA-pwwp-3q7j-9mx8

Published

September 17, 2024 9:30 PM

Last Modified

September 25, 2024 6:18 PM

CVSS Score

5.0 /10

Primary Ecosystem

PyPI

Primary Package

micropython-copy

GitHub Reviewed

✓ Yes

Dataset

Last updated: June 15, 2025 6:24 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.