Bug 2484454 (CVE-2026-46269)

Summary: CVE-2026-46269 kernel: pinctrl: canaan: k230: Fix NULL pointer dereference when parsing devicetree
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: unspecified    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the Linux kernel's k230 pinctrl driver. During the probing process, a NULL pointer dereference can occur when parsing the devicetree. This vulnerability allows a local attacker to trigger a system crash, leading to a Denial of Service (DoS). The issue arises from attempting to access an uninitialized device pointer.
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Description OSIDB Bzimport 2026-06-03 18:02:14 UTC 
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.
Comment 1 Keith Grant 2026-06-03 19:41:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026060338-CVE-2026-46269-3ec0@gregkh/T