{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:chipsalliance:rocket-chip:2025-01-29:*:*:*:*:*:*:*",
              "matchCriteriaId": "ECAE92E0-1FD8-4AA5-A40A-5002B34F1B11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Se descubri\u00f3 un problema en Chipsalliance Rocket-Chip commit f517abbf41abb65cea37421d3559f9739efd00a9 (2025-01-29) que permite a los atacantes corromper el manejo de excepciones y las transiciones de estado de privilegio a trav\u00e9s de una interacci\u00f3n defectuosa entre el manejo de excepciones y los mecanismos de retorno MRET en la l\u00f3gica del CSR cuando se activa una excepci\u00f3n durante la ejecuci\u00f3n de MRET. La l\u00f3gica del Registro de Control y Estado (CSR) tiene una interacci\u00f3n defectuosa entre los mecanismos de manejo de excepciones y de retorno de excepciones (MRET), lo que puede causar un comportamiento de trampa defectuoso. Cuando la instrucci\u00f3n MRET se ejecuta en modo m\u00e1quina sin estar en un estado de excepci\u00f3n, se puede activar una Falla de Acceso a Instrucci\u00f3n. Esto resulta en que tanto la l\u00f3gica de manejo de excepciones como la l\u00f3gica de retorno de excepciones se activen simult\u00e1neamente, lo que lleva a actualizaciones conflictivas en los registros de control y estado."
    }
  ],
  "id": "CVE-2025-56301",
  "lastModified": "2025-10-17T20:45:34.003",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-09-30T15:15:52.040",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/chipsalliance/rocket-chip"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/chipsalliance/rocket-chip/blob/f517abbf41abb65cea37421d3559f9739efd00a9/src/main/scala/rocket/CSR.scala"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/chipsalliance/rocket-chip/blob/master/src/main/scala/rocket/CSR.scala"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/heyfenny/Vulnerability_disclosure/blob/main/RISCV/Rocket-chip/CVE-2025-56301/details.md"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product"
      ],
      "url": "https://lf-riscv.atlassian.net/wiki/spaces/HOME/pages/16154769/RISC-V+Technical+Specifications#ISA-Specifications"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1281"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}