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CVE-2026-64276

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count rmi_f30_map_gpios() allocates gpioled_key_map with min(gpioled_count, TRACKSTICK_RANGE_END) == at most 6 entries, but rmi_f30_attention() iterates the full f30->gpioled_count (device query register, range 0..31) and dereferences gpioled_key_map[i], and input->keycodemax is set to the full gpioled_count while input->keycode points at the 6-entry allocation. A device that reports gpioled_count > 6 with GPIO support enabled therefore causes an out-of-bounds read on the attention interrupt and out-of-bounds read/write through the EVIOCGKEYCODE/EVIOCSKEYCODE ioctls, which bound the index only against keycodemax. This is the same defect as the F3A handler, which was copied from F30. Size the keymap for the full gpioled_count; the mapping loop still assigns only the first min(gpioled_count, TRACKSTICK_RANGE_END) entries.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-07-25 10:17:08.060000
Last modified
2026-10-24 13:10:00.147000
View original CVE JSON 
{
  "id": "CVE-2026-64276",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-07-25T10:17:08.060",
  "lastModified": "2026-10-24T13:10:00.147",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count\n\nrmi_f30_map_gpios() allocates gpioled_key_map with\nmin(gpioled_count, TRACKSTICK_RANGE_END) == at most 6 entries, but\nrmi_f30_attention() iterates the full f30->gpioled_count (device query\nregister, range 0..31) and dereferences gpioled_key_map[i], and\ninput->keycodemax is set to the full gpioled_count while input->keycode\npoints at the 6-entry allocation.\n\nA device that reports gpioled_count > 6 with GPIO support enabled\ntherefore causes an out-of-bounds read on the attention interrupt and\nout-of-bounds read/write through the EVIOCGKEYCODE/EVIOCSKEYCODE ioctls,\nwhich bound the index only against keycodemax. This is the same defect\nas the F3A handler, which was copied from F30.\n\nSize the keymap for the full gpioled_count; the mapping loop still\nassigns only the first min(gpioled_count, TRACKSTICK_RANGE_END) entries."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nEntrada: synaptics-rmi4 - se limitó el mapa de teclas F30 al recuento de GPIO/LED\n\nrmi_f30_map_gpios() asigna gpioled_key_map con min(gpioled_count, TRACKSTICK_RANGE_END) == como máximo 6 entradas, pero rmi_f30_attention() itera el f30  ->  gpioled_count completo (registro de consulta del dispositivo, rango 0..31) y desreferencia gpioled_key_map[i], y input  ->  keycodemax se establece en el gpioled_count completo mientras que input  ->  keycode apunta a la asignación de 6 entradas.\n\nUn dispositivo que informa gpioled_count > 6 con soporte GPIO habilitado, por lo tanto, causa una lectura fuera de límites en la interrupción de atención y lectura/escritura fuera de límites a través de los ioctls EVIOCGKEYCODE/EVIOCSKEYCODE, que limitan el índice solo contra keycodemax. Este es el mismo defecto que el gestor F3A, que fue copiado de F30.\n\nDimensionar el mapa de teclas para el gpioled_count completo; el bucle de mapeo aún asigna solo las primeras min(gpioled_count, TRACKSTICK_RANGE_END) entradas."
    }
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              "versionType": "original_commit_for_fix",
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  "metrics": {
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 1.8,
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    "ssvcV203": [
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        "ssvcData": {
          "timestamp": "2026-10-16T15:38:09.946802Z",
          "id": "CVE-2026-64276",
          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
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            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
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  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
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        }
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