CVE-2026-46269 pinctrl: canaan: k230: Fix NULL pointer dereference when parsing devicetree
A NULL pointer dereference in the Canaan K230 pinctrl driver causes a kernel crash during device tree parsing, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-46269?
CVE-2026-46269 is a medium-severity vulnerability in Linux kernel, published on 3 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-476
Which versions are affected by CVE-2026-46269?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46269?
Apply the vendor's patch.
Is CVE-2026-46269 being exploited?
There is no known exploitation of CVE-2026-46269 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-46269, DEBIAN-CVE-2026-46269, GHSA-qm9x-frx6-xcv6, UBUNTU-CVE-2026-46269.