In the Linux kernel, the following vulnerability has been resolved: pinctrl: canaan: k230: Fix...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (5)
- https://nvd.nist.gov/vuln/detail/CVE-2026-46269
- https://git.kernel.org/stable/c/1d0d361f4dbc2bb2003594f84e4b101fc6b508c0
- https://git.kernel.org/stable/c/3c7d637bfc3dfbd6471c68bd767f7eb8b5b09eba
- https://git.kernel.org/stable/c/d8c128fb6c2277d95f3f6a4ce28b82c8370031f6
- https://github.com/advisories/GHSA-qm9x-frx6-xcv6