RISC-V and openRISC Processor Hardware Vulnerabilities CVE-2025-51678/51677 Analysis

Vulnerability Overview SynFuzz identified three vulnerabilities related to RISC-V and openRISC processors, corresponding to CVE-2025-51678, CVE-2025-51678, and CVE-2025-51677. These vulnerabilities involve different vulnerability types and affected product components. Scope of Impact 1. B2 (CVE-2025-51678) - Vulnerability Type: CWE-1420 - Product Vendor: RISC-V - Affected Component: Memory Interface - Attack Type: Context-dependent - Description: This vulnerability may cause memory access interruptions, such as incorrect instruction fetches or unexpected data retrieval, thereby compromising the reliability and integrity of processor operations. 2. B3 (CVE-2025-51678) - Vulnerability Type: CWE-1198 - Product Vendor: RISC-V - Affected Component: Co-processor Interface - Attack Type: Context-dependent - Description: This vulnerability may result in incomplete or incorrect instruction forwarding during the decoding phase, affecting the reliability and compatibility of hardware acceleration. 3. B5 (CVE-2025-51677) - Vulnerability Type: CWE-1261 - Product Vendor: openRISC - Affected Component: Frontend - Attack Type: Context-dependent - Description: This vulnerability may cause the debug unit to request a memory load during debug operations, leading to incorrect data reception. This impacts the misinterpretation of memory states and the prevention mechanisms of debug entities. Remediation B2 (CVE-2025-51678) - Reference Link: GitHub Issue - Trigger Input: and - Expected Output: B3 (CVE-2025-51678) - Reference Link: GitHub Issue - Trigger Input: and - Expected Output: B5 (CVE-2025-51677) - Reference Link: GitHub Issue - Trigger Input: - Expected Output: POC Code B2 (CVE-2025-51678) B3 (CVE-2025-51678) B5 (CVE-2025-51677) The above information summarizes key details of the three vulnerabilities identified by SynFuzz, including the vulnerability overview, scope of impact, and remediation measures, along with the relevant POC code.

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RISC-V and openRISC Processor Hardware Vulnerabilities CVE-2025-51678/51677 Analysis