Description
A weakness has been identified in nschloe meshio up to 5.3.5. Impacted is an unknown function of the file meshio/_vtk_42.py of the component VTK Reader. Executing a manipulation of the argument DIMENSIONS can lead to uncontrolled memory allocation. The attack can be executed remotely. The project was informed of the problem early through an issue report but has not responded yet.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nschloe | meshio | 5.3.0, 5.3.1, 5.3.2, 5.3.3, 5.3.4, 5.3.5 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | python-meshio | No fix yet | — |
| Ubuntu 26.04 LTS | python-meshio | No fix yet | — |
| Ubuntu 24.04 LTS | python-meshio | No fix yet | — |
| Ubuntu 22.04 LTS | python-meshio | No fix yet | — |
| Ubuntu 20.04 LTS | python-meshio | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | python-meshio | No fix yet | — |
References
- VDB-428027 | nschloe meshio VTK Reader _vtk_42.py memory allocation vdb-entry technical-description
- VDB-428027 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-118589 | CVE Analysis and Report third-party-advisory
- Submit #1026207 | nschloe meshio 5.3.5 Uncontrolled Memory Allocation third-party-advisory
- https://github.com/nschloe/meshio/issues/1576 issue-tracking
- https://github.com/nschloe/meshio/ product