5.5

CVE-2026-46269

pinctrl: canaan: k230: Fix NULL pointer dereference when parsing devicetree

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.15.10 < 6.16
Linux ≫ Linux Kernel Version >= 6.16.1 < 6.18.14
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.4
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.11% 0.017
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

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