GHSA-vxcf-c7mx-pg53 Build corruption when using `PYO3_CONFIG_FILE` environment variable
Incorrect build configuration causes compiled Python wheels to crash the interpreter, requiring users to upgrade PyO3 and rebuild artifacts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-vxcf-c7mx-pg53?
GHSA-vxcf-c7mx-pg53 is a vulnerability in pyo3, published on 4 Dec 2024.
Official description
In PyO3 0.23.0 the PYO3_CONFIG_FILE environment variable used to configure builds regressed such that changing the environment variable would no longer trigger PyO3 to reconfigure and recompile. In combination with workflows using tools such as maturin to build for multiple versions in a single build, this leads to Python wheels being compiled against the wrong Python API version.
All users who distribute artefacts for multiple Python versions are encouraged to update and rebuild with PyO3 0.23.3. Affected wheels produced from PyO3 0.23.0 through 0.23.2 are highly unstable and will crash the Python interpreter in unpredictable ways.
Which versions are affected by GHSA-vxcf-c7mx-pg53?
3 open source packages ship an affected version, including pyo3.
| Package | Affected | Fixed in |
|---|---|---|
pyo3 crates.io | From 0.23.0 | 0.23.3 |
pyo3 crates.io | From 0.23.0 | 0.23.3 |
pyo3 crates.io | From 0.23.0 | 0.23.3 |
How do I fix GHSA-vxcf-c7mx-pg53?
Upgrade pyo3 to 0.23.3 or later.
Is GHSA-vxcf-c7mx-pg53 being exploited?
There is no known exploitation of GHSA-vxcf-c7mx-pg53 in the wild and no public exploit code.
Sources
Also known as RUSTSEC-2024-0409.