Our work shows that it is possible to trigger Rowhammer bit flips on DDR4 devices on AMD Zen 2 and Zen 3 systems despite deployed TRR mitigations. This result proves that AMD systems are equally vulnerable to Rowhammer as Intel systems, which greatly increases the attack surface, considering today’s AMD market share of around 36%… Read
It turns out that with precise scheduling, you can cause some processors to recover from a mispredicted vzeroupper incorrectly!
This technique is CVE-2023-20593 and it works on all Zen 2 class processors, which includes at least the following products
