CVE-2024-8947

Name	CVE-2024-8947
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1082511

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
micropython (PTS)	sid	1.24.0+ds-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
micropython	source	(unstable)	1.24.0+ds-1			1082511

Notes

https://github.com/micropython/micropython/issues/13283
https://github.com/micropython/micropython/issues/13283#issuecomment-1918479709
Fixed by: https://github.com/micropython/micropython/commit/4bed614e707c0644c06e117f848fa12605c711cd (v1.23.0)