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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-62958",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-02T14:54:34.516881Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-11-02T14:55:00.894Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/libriscv/libriscv/security/advisories/GHSA-gm4g-6c78-gr3w"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libriscv",
          "vendor": "libriscv",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.18"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libriscv is a RISC-V sandbox and emulator. Prior to 1.18, a crafted ELF binary can cause out-of-bounds reads in the host emulator. `Memory\u003cW\u003e::binary_loader` checks `PT_LOAD` program-header bounds, but `Memory\u003cW\u003e::serialize_execute_segment` trusts section-header `sh_offset` and `sh_size` when locating `.text` without verifying the file range against `m_binary.size()`; `Memory\u003cW\u003e::lookup()` has a similar section-table problem. Malformed `.text` or `.symtab` offsets can therefore bypass the program-header checks and point outside the binary buffer, crashing rvlinux. With suitable memory layout or integer overflow, out-of-buffer host heap memory may instead be mapped into the guest by `create_execute_segment()`, potentially exposing host memory. The reported reproducer demonstrates a host SIGSEGV, while memory disclosure through grooming is described as possible rather than demonstrated. This issue is fixed in version 1.18."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.9,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T20:44:21.663Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/libriscv/libriscv/security/advisories/GHSA-gm4g-6c78-gr3w",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/libriscv/libriscv/security/advisories/GHSA-gm4g-6c78-gr3w"
        },
        {
          "name": "https://github.com/libriscv/libriscv/commit/61ef9ca82c8876dd80b33780893ba512af780e93",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/libriscv/libriscv/commit/61ef9ca82c8876dd80b33780893ba512af780e93"
        },
        {
          "name": "https://github.com/libriscv/libriscv/commit/7bd1c189f9f9d54368cde096b07b194ad680f9fa",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/libriscv/libriscv/commit/7bd1c189f9f9d54368cde096b07b194ad680f9fa"
        },
        {
          "name": "https://github.com/libriscv/libriscv/releases/tag/v1.18",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/libriscv/libriscv/releases/tag/v1.18"
        }
      ],
      "source": {
        "advisory": "GHSA-gm4g-6c78-gr3w",
        "discovery": "UNKNOWN"
      },
      "title": "libriscv: Out of bounds read vuln in the ELF parser (Denial of service)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-62958",
    "datePublished": "2026-10-30T20:44:21.663Z",
    "dateReserved": "2026-07-14T22:32:17.732Z",
    "dateUpdated": "2026-11-02T14:55:00.894Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}