AMD and Graz University of Technology researchers have disclosed a new vulnerability in AMD CPU called CacheWarp, or CVE-2023-20592 (via ComputerBase). This attack exploits a security feature in EPYC server CPUs that’s supposed to make them resistant to hacks. The vulnerability affects first through third generation EPYC CPUs (Naples, Rome, and Milan), but AMD has only made a microcode patch for third generation Milan chips.
