With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dereference.
Exploitability
AV:PAC:LPR:NUI:NScope
S:UImpact
C:HI:HA:H6.8/CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HMemory Safety