CVE-2026-37532

{
  "id": "CVE-2026-37532",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-01T17:16:22.897",
  "lastModified": "2026-11-08T16:10:00.183",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "AGL agl-service-can-low-level thru 17.1.12 contains a heap buffer over-read in the isotp-c library. In isotp_continue_receive (receive.c:87-89), the payload_length for a Single Frame is extracted from a 4-bit nibble in the CAN frame data, yielding values 0-15. However, a standard CAN frame is only 8 bytes, with payload starting at data[1] (7 bytes available). When payload_length exceeds the available data (e.g., nibble=15 but only 7 payload bytes exist), memcpy(message.payload, &data[1], payload_length) reads up to 8 bytes past the end of the data buffer."
    },
    {
      "lang": "es",
      "value": "AGL agl-service-can-low-level hasta la 17.1.12 contiene una lectura excesiva de búfer de pila en la biblioteca isotp-c. En isotp_continue_receive (receive.c:87-89), la longitud de la carga útil (payload_length) para un Marco Único se extrae de un nibble de 4 bits en los datos del marco CAN, produciendo valores de 0 a 15. Sin embargo, un marco CAN estándar es de solo 8 bytes, con la carga útil comenzando en data[1] (7 bytes disponibles). Cuando payload_length excede los datos disponibles (por ejemplo, nibble=15 pero solo existen 7 bytes de carga útil), memcpy(message.payload, &data[1], payload_length) lee hasta 8 bytes más allá del final del búfer de datos."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "version": "n/a",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-01T19:33:10.186601Z",
          "id": "CVE-2026-37532",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-126"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linuxfoundation:automotive_grade_linux:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "17.1.12",
              "matchCriteriaId": "F565A1E5-42E5-4115-830F-2A328C92F35B"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://gerrit.automotivelinux.org/gerrit/apps/agl-service-can-low-level",
      "source": "[email protected]",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://gist.github.com/sgInnora/8526eedcfd826d05ef1fc45d8f405643",
      "source": "[email protected]",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}