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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-56301 Detail

Description

An issue was discovered in Chipsalliance Rocket-Chip commit f517abbf41abb65cea37421d3559f9739efd00a9 (2025-01-29) allowing attackers to corrupt exception handling and privilege state transitions via a flawed interaction between exception handling and MRET return mechanisms in the CSR logic when an exception is triggered during MRET execution. The Control and Status Register (CSR) logic has a flawed interaction between exception handling and exception return (MRET) mechanisms which can cause faulty trap behavior. When the MRET instruction is executed in machine mode without being in an exception state, an Instruction Access Fault may be triggered. This results in both the exception handling logic and the exception return logic activating simultaneously, leading to conflicting updates to the control and status registers.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/chipsalliance/rocket-chip MITRE
https://github.com/chipsalliance/rocket-chip/blob/f517abbf41abb65cea37421d3559f9739efd00a9/src/main/scala/rocket/CSR.scala MITRE
https://github.com/chipsalliance/rocket-chip/blob/master/src/main/scala/rocket/CSR.scala MITRE
https://github.com/heyfenny/Vulnerability_disclosure/blob/main/RISCV/Rocket-chip/CVE-2025-56301/details.md MITRE
https://lf-riscv.atlassian.net/wiki/spaces/HOME/pages/16154769/RISC-V+Technical+Specifications#ISA-Specifications MITRE

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-56301
NVD Published Date:
09/30/2025
NVD Last Modified:
09/30/2025
Source:
MITRE