micropython: A vulnerability was found in MicroPython 1.23.0
CVE-2024-8946 is fixed in micropython on 1 platform, first by micropython 1.12-1ubuntu0.1~esm1, released September 17, 2024. It is not reported as exploited. Patch Radar priority: High.
A vulnerability was found in MicroPython 1.23.0. It has been classified ascritical. Affected is the function mp_vfs_umount of the file extmod/vfs.cof the component VFS Unmount Handler. The manipulation leads to heap-basedbuffer overflow. It is possible to launch the attack remotely. The exploithas been disclosed to the public and may be used. The name of the patch is29943546343c92334e8518695a11fc0e2ceea68b. It is recommended to apply apatch to fix this issue. In the VFS unmount process, the comparison betweenthe mounted path string and the unmount requested string is based solely onthe length of the unmount string, which can lead to a heap buffer overflowread.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| micropython · Debian 13.5 (trixie) | 1.24.0+ds-1 | DEBIAN-CVE-2024-8946 | Sep 17, 2024 |
| micropython · Debian 14 | 1.24.0+ds-1 | DEBIAN-CVE-2024-8946 | Sep 17, 2024 |
| micropython · Ubuntu 20.04 LTS (focal) | 1.12-1ubuntu0.1~esm1 | micropython 1.12-1ubuntu0.1~esm1 | Sep 17, 2024 |
| micropython · Ubuntu 22.04.1 LTS (jammy) | 1.17+ds-1.1ubuntu2+esm1 | micropython 1.17+ds-1.1ubuntu2+esm1 | Sep 17, 2024 |
| micropython · Ubuntu 24.04.5 LTS (noble) | 1.22.1+ds-1ubuntu0.24.04.1~esm1 | micropython 1.22.1+ds-1ubuntu0.24.04.1~esm1 | Sep 17, 2024 |
| micropython · Ubuntu 24.10 (oracular) | 1.22.1+ds-1ubuntu0.24.10.1 | micropython 1.22.1+ds-1ubuntu0.24.10.1 | Jan 16, 2026 |
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