Spectre Vulnerabilities Found in Commercial RISC-V Chips
TL;DR. Researchers confirmed that commercial RISC-V processors are vulnerable to Spectre security flaws, challenging prior assumptions of their immunity. - Academics from Belgium and Germany detailed proof-of-concept attacks on SiFive P550 and T-Head Xuantie C910/C920 processors. - These out-of-order execution chips are susceptible to major Spectre variants, including PHT, BTB, RSB, and STL. - In-order RISC-V processors like SiFive U74 and Xuantie C906/C908 appear unaffected by these specific vulnerabilities.
- Spectre vulnerabilities, first identified in 2018, persist in certain commercial RISC-V chips.
- Researchers demonstrated successful Spectre attacks on SiFive P550 and T-Head Xuantie C910/C920 processors.
- The findings disprove the assumption that RISC-V's architectural simplicity renders it immune to speculative execution attacks.
- This impacts the security landscape for a growing chip architecture used in various tech domains.