Similar to Spectre and Meltdown( and Foreshadow), that were discovered in Jan 2018, now it was found another Spoiler. The original paper is that describes Spoiler here
According to the original paper
Knowledge of the physical address enables adversaries to bypass OS protections  and ease other microarchitectural] attacks . For instance, the procfs filesystem exposes
physical addresses , and Huge pages allocate contiguous physical memory
I will read more about it and I will post my findings.