CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2023-7152
A vulnerability, which was classified as critical, has been found in MicroPython 1.21.0/1.22.0-preview. Affected by this issue is the function poll_set_add_fd of the file extmod/modselect.c. The manipulation leads to use after free. The exploit has been disclosed to the public and may be used. The patch is identified as 8b24aa36ba978eafc6114b6798b47b7bfecdca26. It is recommended to apply a patch to fix this issue. VDB-249158 is the identifier assigned to this vulnerability.
Severity
- EPSS
- 0.9% chance of exploitation in the next 30 days; higher than 59% of CVEs (scores of 2026-10-31)
- CWE
- CWE-416
- Published
- Modified
- Record from
- the NVD, synced
Affected
- micropython:micropython
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| PYSEC-2023-256 | PyPI | micropython-copy | all versions | no fix published |
| PYSEC-2023-257 | PyPI | micropython-io | all versions | no fix published |
| PYSEC-2023-258 | PyPI | micropython-os | all versions | no fix published |
| PYSEC-2023-259 | PyPI | micropython-select | all versions | no fix published |
References
- https://github.com/jimmo/micropython/commit/8b24aa36ba978eafc6114b6798b47b7bfecdca26
- https://github.com/micropython/micropython/issues/12887
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4E2HYWCZB5R4SHY4SZZZSFDMD64N4SOZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D3WWY5JY4RTJE25APB4REGDUDPATG6H7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TEK46QAJOXXDZOWOIE2YACUOCZFWOBCK/