Tavis Ormandy discovered that under specific microarchitectural circumstances, a vector register in AMD 'Zen 2' CPUs may not be written to 0 correctly. This flaw allows an attacker to leak sensitive information across concurrent processes, hyper threads and virtualized guests. For details please refer to https://lock.cmpxchg8b.com/zenbleed.html and https://github.com/google/security-research/secur ...