CVE-2023-33595
Published: October 18, 2023Last modified: July 22, 2025
Description
CPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
Notes
It's a Python 3.12 issue only, and at the time of this writing we only ship Python 3.11.
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | python3 | Not affected (3.11.5-r0) |
| Stream | python3 | Not affected (3.11.5-r0) | |
| Hardened Containers | 23 LTS | python3 | Not affected (3.11.5-r0) |
| Stream | python3 | Not affected (3.11.5-r0) |