CPU AMD Zen 5 is vulnerable to an exploit that allows microcode modification and bypassing of SEV-SNP isolation.
AMD has listed processors based on the Zen 5 microarchitecture as being susceptible to the EntrySign vulnerability, which enables bypassing of the digital signature verification mechanism during microcode updates. Initially, it was believed that the vulnerability only affected AMD CPUs based on the 1st to 4th generations of the Zen microarchitecture. Thus, the vulnerability turned out to be applicable to processors such as Ryzen 9000 (Granite Ridge), EPYC 9005 (Turin), Ryzen […]
