CVE-2026-59145

{
  "id": "CVE-2026-59145",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-07-21T20:17:03.300",
  "lastModified": "2026-10-24T19:10:00.127",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find.\n\nThe attach-time validator si_validate_header is thorough about the header and layout (magic, version, section offsets, total_size, count and arena_used) but does not validate the three arrays it then trusts. Every lookup in si_idx_find walks a triple indirection read straight from the mmap'd segment, arena[reverse[slots[i].id]], with no bound on slots[i].id against count, on the reverse[id] arena offset against arena_used, or on the arena record's length prefix.\n\nA local peer that can write the backing file can leave the header valid while poisoning a slot id, a reverse offset or an arena length prefix, so an id_of, intern or string lookup dereferences the chain out of bounds; because string() returns a file-controlled length of bytes from the arena, adjacent process memory can be disclosed."
    },
    {
      "lang": "es",
      "value": "Las versiones de Data::Intern::Shared anteriores a 0.02 para Perl permiten una lectura fuera de límites a través de índices de slot, reverse y arena no validados en si_idx_find.\n\nEl validador en tiempo de adjunción si_validate_header es exhaustivo con respecto al encabezado y la disposición (magic, versión, offsets de sección, total_size, count y arena_used) pero no valida los tres arrays en los que luego confía. Cada búsqueda en si_idx_find recorre una lectura de triple indirección directamente desde el segmento mapeado con mmap, arena[reverse[slots[i].id]], sin un límite en slots[i].id con respecto a count, en el offset de arena reverse[id] con respecto a arena_used, o en el prefijo de longitud del registro de arena.\n\nUn par local que puede escribir el archivo de respaldo puede dejar el encabezado válido mientras envenena un id de slot, un offset de reverse o un prefijo de longitud de arena, de modo que una búsqueda de id_of, intern o string desreferencia la cadena fuera de límites; debido a que string() devuelve una longitud de bytes controlada por el archivo desde la arena, la memoria de proceso adyacente puede ser divulgada."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "vendor": "EGOR",
          "product": "Data::Intern::Shared",
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "Data-Intern-Shared",
          "programFiles": [
            "intern.h"
          ],
          "programRoutines": [
            {
              "name": "si_idx_find"
            }
          ],
          "repo": "https://github.com/vividsnow/perl5-data-intern-shared",
          "versions": [
            {
              "version": "0",
              "lessThan": "0.02",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-22T19:34:25.552957Z",
          "id": "CVE-2026-59145",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://metacpan.org/release/EGOR/Data-Intern-Shared-0.02/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/EGOR/Data-Intern-Shared-0.02/diff/EGOR/Data-Intern-Shared-0.01#intern.h",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ]
}