🟡 Medium | Source: The Register — Security
Researchers have demonstrated that certain RISC-V processors are vulnerable to Spectre-style speculative execution attacks, a class of hardware flaw first disclosed in 2018. These attacks allow malicious code to infer the contents of memory it should not be able to access, potentially exposing sensitive data. The finding is significant as RISC-V adoption grows in cloud and embedded environments, extending a long-standing vulnerability class to a newer chip architecture.
Security Architect’s Take: Audit your cloud and on-premises workloads for any RISC-V-based instances or custom silicon — particularly relevant if you use emerging cloud providers or edge infrastructure built on RISC-V. Ensure OS-level Spectre mitigations (e.g. retpolines, kernel page-table isolation) are enabled and up to date, and monitor chip vendors for firmware or microcode patches.
Original advisory: Spectre rears its ugly head again as researchers show some RISC-V chips are susceptible