CVE-2026-46269
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | d94a32ac688f953dc9a9f12b5b4139ecad841bbb < 3c7d637bfc3dfbd6471c68bd767f7eb8b5b09eba | affected |
| Linux | Linux | d94a32ac688f953dc9a9f12b5b4139ecad841bbb < 1d0d361f4dbc2bb2003594f84e4b101fc6b508c0 | affected |
| Linux | Linux | d94a32ac688f953dc9a9f12b5b4139ecad841bbb < d8c128fb6c2277d95f3f6a4ce28b82c8370031f6 | affected |
| Linux | Linux | 02c1deb1bff2b6d242e29a51e56107495979a2b8 | affected |
| Linux | Linux | 0ec03251d01494ef207089b5bd626becfd05fd86 | affected |
| Linux | Linux | 6.15.10 < 6.16 | affected |
| Linux | Linux | 6.16.1 < 6.17 | affected |
| Linux | Linux | 6.17 | affected |
| Linux | Linux | 0 < 6.17 | unaffected |
| Linux | Linux | 6.18.14 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.4 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
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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