Few patches were recently marked for stable@ but commits are not backportable as-is and require a few tweaks. Here is 5.2 stable backport.
[PATCHes 2/3 of the series apply as-is, I have them here for completeness]
Jan Kiszka (1): KVM: nVMX: Clear pending KVM_REQ_GET_VMCS12_PAGES when leaving nested
Paolo Bonzini (2): KVM: nVMX: do not use dangling shadow VMCS after guest reset Revert "kvm: x86: Use task structs fpu field for user"
arch/x86/include/asm/kvm_host.h | 7 ++++--- arch/x86/kvm/vmx/nested.c | 10 +++++++++- arch/x86/kvm/x86.c | 4 ++-- 3 files changed, 15 insertions(+), 6 deletions(-)