CVE-2021-42521

There is a NULL pointer dereference vulnerability in VTK, and it lies in
IO/Infovis/vtkXMLTreeReader.cxx. The vendor didn’t 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.Read More