There is a NULL pointer dereference vulnerability in VTK before 9.2.5, and it lies in IO/Infovis/vtkXMLTreeReader.cxx. The vendor didnt check the return value of libxml2 API xmlDocGetRootElement, and try to dereference it. It is unsafe as the return value can be NULL and that NULL pointer dereference may crash the application.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Vtk | Vtk | * | 9.0.0 (including) |
| Vtk | Ubuntu | trusty | * |
| Vtk | Ubuntu | xenial | * |
| Vtk6 | Ubuntu | bionic | * |
| Vtk6 | Ubuntu | trusty | * |
| Vtk6 | Ubuntu | xenial | * |
| Vtk7 | Ubuntu | bionic | * |
| Vtk7 | Ubuntu | kinetic | * |
| Vtk9 | Ubuntu | kinetic | * |
| Vtk9 | Ubuntu | lunar | * |
| Vtk9 | Ubuntu | mantic | * |