FKIE_CVE-2026-46269

Vulnerability from fkie_nvd - Published: 2026-06-03 18:16 - Updated: 2026-07-22 20:10
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: pinctrl: canaan: k230: Fix NULL pointer dereference when parsing devicetree When probing the k230 pinctrl driver, the kernel triggers a NULL pointer dereference. The crash trace showed: [ 0.732084] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000068 [ 0.740737] ... [ 0.776296] epc : k230_pinctrl_probe+0x1be/0x4fc In k230_pinctrl_parse_functions(), we attempt to retrieve the device pointer via info->pctl_dev->dev, but info->pctl_dev is only initialized after k230_pinctrl_parse_dt() completes. At the time of DT parsing, info->pctl_dev is still NULL, leading to the invalid dereference of info->pctl_dev->dev. Use the already available device pointer from platform_device instead of accessing through uninitialized pctl_dev.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1d0d361f4dbc2bb2003594f84e4b101fc6b508c0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c7d637bfc3dfbd6471c68bd767f7eb8b5b09ebaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8c128fb6c2277d95f3f6a4ce28b82c8370031f6Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pinctrl/pinctrl-k230.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3c7d637bfc3dfbd6471c68bd767f7eb8b5b09eba",
              "status": "affected",
              "version": "d94a32ac688f953dc9a9f12b5b4139ecad841bbb",
              "versionType": "git"
            },
            {
              "lessThan": "1d0d361f4dbc2bb2003594f84e4b101fc6b508c0",
              "status": "affected",
              "version": "d94a32ac688f953dc9a9f12b5b4139ecad841bbb",
              "versionType": "git"
            },
            {
              "lessThan": "d8c128fb6c2277d95f3f6a4ce28b82c8370031f6",
              "status": "affected",
              "version": "d94a32ac688f953dc9a9f12b5b4139ecad841bbb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02c1deb1bff2b6d242e29a51e56107495979a2b8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0ec03251d01494ef207089b5bd626becfd05fd86",
              "versionType": "git"
            },
            {
              "lessThan": "6.16",
              "status": "affected",
              "version": "6.15.10",
              "versionType": "semver"
            },
            {
              "lessThan": "6.17",
              "status": "affected",
              "version": "6.16.1",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pinctrl/pinctrl-k230.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8E12C24E-0833-48D3-9A8D-574823A693F0",
              "versionEndExcluding": "6.16",
              "versionStartIncluding": "6.15.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3767EE4D-F3A5-47B1-BBC2-25E6FCBA9F17",
              "versionEndExcluding": "6.18.14",
              "versionStartIncluding": "6.16.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092",
              "versionEndExcluding": "6.19.4",
              "versionStartIncluding": "6.19",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: canaan: k230: Fix NULL pointer dereference when parsing devicetree\n\nWhen probing the k230 pinctrl driver, the kernel triggers a NULL pointer\ndereference. The crash trace showed:\n[    0.732084] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000068\n[    0.740737] ...\n[    0.776296] epc : k230_pinctrl_probe+0x1be/0x4fc\n\nIn k230_pinctrl_parse_functions(), we attempt to retrieve the device\npointer via info-\u003epctl_dev-\u003edev, but info-\u003epctl_dev is only initialized\nafter k230_pinctrl_parse_dt() completes.\n\nAt the time of DT parsing, info-\u003epctl_dev is still NULL, leading to\nthe invalid dereference of info-\u003epctl_dev-\u003edev.\n\nUse the already available device pointer from platform_device\ninstead of accessing through uninitialized pctl_dev."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\npinctrl: canaan: k230: Correcci\u00f3n de desreferencia de puntero NULL al analizar el devicetree\n\nAl sondear el controlador pinctrl k230, el kernel activa una desreferencia de puntero NULL. El rastro del fallo mostr\u00f3:\n[ 0.732084] No se puede manejar la desreferencia de puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000068\n[ 0.740737] ...\n[ 0.776296] epc : k230_pinctrl_probe+0x1be/0x4fc\n\nEn k230_pinctrl_parse_functions(), intentamos recuperar el puntero del dispositivo a trav\u00e9s de info-\u003epctl_dev-\u003edev, pero info-\u003epctl_dev solo se inicializa despu\u00e9s de que k230_pinctrl_parse_dt() se complete.\n\nEn el momento del an\u00e1lisis de DT, info-\u003epctl_dev sigue siendo NULL, lo que lleva a la desreferencia inv\u00e1lida de info-\u003epctl_dev-\u003edev.\n\nUtilizar el puntero del dispositivo ya disponible de platform_device en lugar de acceder a trav\u00e9s de un pctl_dev no inicializado."
    }
  ],
  "id": "CVE-2026-46269",
  "lastModified": "2026-07-22T20:10:00.127",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-06-03T18:16:28.593",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/1d0d361f4dbc2bb2003594f84e4b101fc6b508c0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3c7d637bfc3dfbd6471c68bd767f7eb8b5b09eba"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d8c128fb6c2277d95f3f6a4ce28b82c8370031f6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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