There is a serious security flaw in billions of Intel CPUs that can let attackers steal confidential data like passwords and encryption keys. Firmware updates can fix it, but at a potential significant performance loss.
Here is a good write-up of Zenbleed for the Ryzen 2 and up vulnerability. It uses similar register optimisation and speculative execution to get the same effect.
Here is a good write-up of Zenbleed for the Ryzen 2 and up vulnerability. It uses similar register optimisation and speculative execution to get the same effect.