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CVE-2023-53658

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: spi: bcm-qspi: return error if neither hif_mspi nor mspi is available If neither a "hif_mspi" nor "mspi" resource is present, the driver will just early exit in probe but still return success. Apart from not doing anything meaningful, this would then also lead to a null pointer access on removal, as platform_get_drvdata() would return NULL, which it would then try to dereference when trying to unregister the spi master. Fix this by unconditionally calling devm_ioremap_resource(), as it can handle a NULL res and will then return a viable ERR_PTR() if we get one. The "return 0;" was previously a "goto qspi_resource_err;" where then ret was returned, but since ret was still initialized to 0 at this place this was a valid conversion in 63c5395bb7a9 ("spi: bcm-qspi: Fix use-after-free on unbind"). The issue was not introduced by this commit, only made more obvious.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-10-07 16:15:49.443000
Last modified
2026-10-28 20:10:00.163000
View original CVE JSON 
{
  "id": "CVE-2023-53658",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-10-07T16:15:49.443",
  "lastModified": "2026-10-28T20:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: bcm-qspi: return error if neither hif_mspi nor mspi is available\n\nIf neither a \"hif_mspi\" nor \"mspi\" resource is present, the driver will\njust early exit in probe but still return success. Apart from not doing\nanything meaningful, this would then also lead to a null pointer access\non removal, as platform_get_drvdata() would return NULL, which it would\nthen try to dereference when trying to unregister the spi master.\n\nFix this by unconditionally calling devm_ioremap_resource(), as it can\nhandle a NULL res and will then return a viable ERR_PTR() if we get one.\n\nThe \"return 0;\" was previously a \"goto qspi_resource_err;\" where then\nret was returned, but since ret was still initialized to 0 at this place\nthis was a valid conversion in 63c5395bb7a9 (\"spi: bcm-qspi: Fix\nuse-after-free on unbind\"). The issue was not introduced by this commit,\nonly made more obvious."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nspi: bcm-qspi: devolver error si ni hif_mspi ni mspi están disponibles\n\nSi ni un recurso ’hif_mspi’ ni ’mspi’ está presente, el controlador simplemente saldrá temprano en probe pero aún así devolverá éxito. Aparte de no hacer nada significativo, esto también llevaría a un acceso de puntero nulo en la eliminación, ya que platform_get_drvdata() devolvería NULL, el cual intentaría desreferenciar al intentar anular el registro del maestro spi.\n\nSolucione esto llamando incondicionalmente a devm_ioremap_resource(), ya que puede manejar un ’res’ NULL y luego devolverá un ERR_PTR() viable si obtenemos uno.\n\nEl ’return 0;’ era previamente un ’goto qspi_resource_err;’ donde luego se devolvía ’ret’, pero dado que ’ret’ todavía estaba inicializado a 0 en este lugar, esta fue una conversión válida en 63c5395bb7a9 (’spi: bcm-qspi: Solucionar uso después de liberación en desvinculación’). El problema no fue introducido por este commit, solo se hizo más obvio."
    }
  ],
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              "lessThanOrEqual": "5.10.*",
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              "version": "6.1.39",
              "lessThanOrEqual": "6.1.*",
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            },
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              "version": "6.4.4",
              "lessThanOrEqual": "6.4.*",
              "versionType": "semver",
              "status": "unaffected"
            },
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              "version": "6.5",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
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      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
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}