GHSA-QM9X-FRX6-XCV6
Vulnerability from github – Published: 2026-06-03 18:33 – Updated: 2026-06-09 21:32In 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": [],
"aliases": [
"CVE-2026-46269"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-03T18:16:28Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: canaan: k230: Fix NULL pointer dereference when parsing devicetree\n\nWhen probing the k230 pinctrl driver, the kernel triggers a NULL pointer\ndereference. The crash trace showed:\n[ 0.732084] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000068\n[ 0.740737] ...\n[ 0.776296] epc : k230_pinctrl_probe+0x1be/0x4fc\n\nIn k230_pinctrl_parse_functions(), we attempt to retrieve the device\npointer via info-\u003epctl_dev-\u003edev, but info-\u003epctl_dev is only initialized\nafter k230_pinctrl_parse_dt() completes.\n\nAt the time of DT parsing, info-\u003epctl_dev is still NULL, leading to\nthe invalid dereference of info-\u003epctl_dev-\u003edev.\n\nUse the already available device pointer from platform_device\ninstead of accessing through uninitialized pctl_dev.",
"id": "GHSA-qm9x-frx6-xcv6",
"modified": "2026-06-09T21:32:21Z",
"published": "2026-06-03T18:33:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46269"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1d0d361f4dbc2bb2003594f84e4b101fc6b508c0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3c7d637bfc3dfbd6471c68bd767f7eb8b5b09eba"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d8c128fb6c2277d95f3f6a4ce28b82c8370031f6"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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