« Volver al listado

CVE-2026-7764

Estado: AnalizadaMedia (6.8)—

An out-of-bounds read vulnerability in the morse.ko HaLow Wi-Fi kernel driver in Morse Micro HaLowLink 2 software versions prior to 2.11.12 allows an unauthenticated attacker within radio range to disclose a small amount of kernel heap memory or cause a Denial of Service (kernel oops/panic) via a crafted 802.11ah beacon or probe response frame containing a malformed Vendor Information Element.

Leer descripción completaMostrar menos

The function morse_vendor_find_vendor_ie() does not validate the IE length against the expected structure size before its result is passed to morse_vendor_rx_caps_ops_ie() and morse_vendor_fill_sta_vendor_info(), which read at fixed offsets into the IE data. Because the length check only requires the IE to be longer than 3 bytes, an attacker can supply an undersized IE, causing a heap out-of-bounds read of up to 9 bytes. No authentication, association, or user interaction is required.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Morsemicro — Halowlink 2 Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-7764",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-7764",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-04T13:01:07.316384Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.8,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 2.5
      }
    ]
  },
  "affected": [
    {
      "source": "4ac701fe-44e9-4bcd-9585-dd6449257611",
      "affectedData": [
        {
          "vendor": "Morse Micro",
          "product": "HaLowLink 2",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2.11.12",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-06-04T02:16:17.700",
  "references": [
    {
      "url": "https://www.morsemicro.com/security-advisories/MM-SA-2026-003",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "4ac701fe-44e9-4bcd-9585-dd6449257611"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An out-of-bounds read vulnerability in the morse.ko HaLow Wi-Fi kernel driver in Morse Micro HaLowLink 2 software versions prior to 2.11.12 allows an unauthenticated attacker within radio range to disclose a small amount of kernel heap memory or cause a Denial of Service (kernel oops/panic) via a crafted 802.11ah beacon or probe response frame containing a malformed Vendor Information Element. The function morse_vendor_find_vendor_ie() does not validate the IE length against the expected structure size before its result is passed to morse_vendor_rx_caps_ops_ie() and morse_vendor_fill_sta_vendor_info(), which read at fixed offsets into the IE data. Because the length check only requires the IE to be longer than 3 bytes, an attacker can supply an undersized IE, causing a heap out-of-bounds read of up to 9 bytes. No authentication, association, or user interaction is required."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de lectura fuera de límites en el controlador del kernel Wi-Fi HaLow morse.ko en las versiones de software Morse Micro HaLowLink 2 anteriores a la 2.11.12 permite a un atacante no autenticado dentro del alcance de la radio divulgar una pequeña cantidad de memoria del heap del kernel o causar una Denegación de Servicio (oops/pánico del kernel) a través de una trama de baliza o de respuesta de sondeo 802.11ah manipulada que contiene un Elemento de Información de Proveedor malformado. La función morse_vendor_find_vendor_ie() no valida la longitud del IE contra el tamaño de estructura esperado antes de que su resultado sea pasado a morse_vendor_rx_caps_ops_ie() y morse_vendor_fill_sta_vendor_info(), que leen en desplazamientos fijos en los datos del IE. Debido a que la verificación de longitud solo requiere que el IE sea más largo que 3 bytes, un atacante puede suministrar un IE de tamaño insuficiente, causando una lectura fuera de límites del heap de hasta 9 bytes. No se requiere autenticación, asociación o interacción del usuario."
    }
  ],
  "lastModified": "2026-07-22T20:10:00.127",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:morsemicro:halowlink_2_firmware:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B80372AB-8DC0-47DC-8B6D-8A8C1AEDAEC7",
              "versionEndExcluding": "2.11.12"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:morsemicro:halowlink_2:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "66482355-C80C-4070-B64A-737EDD5EA8CA"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "4ac701fe-44e9-4bcd-9585-dd6449257611"
}