CVE-2026-46269

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1d0d361f4dbc2bb2003594f84e4b101fc6b508c0	Patch
https://git.kernel.org/stable/c/3c7d637bfc3dfbd6471c68bd767f7eb8b5b09eba	Patch
https://git.kernel.org/stable/c/d8c128fb6c2277d95f3f6a4ce28b82c8370031f6	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2026-06-03 18:16

Updated : 2026-07-22 20:10

NVD link : CVE-2026-46269

Mitre link : CVE-2026-46269

CVE.ORG link : CVE-2026-46269

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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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->pctl_dev->dev, but info->pctl_dev is only initialized\nafter k230_pinctrl_parse_dt() completes.\n\nAt the time of DT parsing, info->pctl_dev is still NULL, leading to\nthe invalid dereference of info->pctl_dev->dev.\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->pctl_dev->dev, pero info->pctl_dev solo se inicializa despu\u00e9s de que k230_pinctrl_parse_dt() se complete.\n\nEn el momento del an\u00e1lisis de DT, info->pctl_dev sigue siendo NULL, lo que lleva a la desreferencia inv\u00e1lida de info->pctl_dev->dev.\n\nUtilizar el puntero del dispositivo ya disponible de platform_device en lugar de acceder a trav\u00e9s de un pctl_dev no inicializado."}], "lastModified": "2026-07-22T20:10:00.127", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8E12C24E-0833-48D3-9A8D-574823A693F0", "versionEndExcluding": "6.16", "versionStartIncluding": "6.15.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3767EE4D-F3A5-47B1-BBC2-25E6FCBA9F17", "versionEndExcluding": "6.18.14", "versionStartIncluding": "6.16.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092", "versionEndExcluding": "6.19.4", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}