GHSA-73PC-M2PM-2MR8
Vulnerability from github – Published: 2025-04-16 15:34 – Updated: 2025-10-31 21:30In the Linux kernel, the following vulnerability has been resolved:
w1: fix NULL pointer dereference in probe
The w1_uart_probe() function calls w1_uart_serdev_open() (which includes devm_serdev_device_open()) before setting the client ops via serdev_device_set_client_ops(). This ordering can trigger a NULL pointer dereference in the serdev controller's receive_buf handler, as it assumes serdev->ops is valid when SERPORT_ACTIVE is set.
This is similar to the issue fixed in commit 5e700b384ec1 ("platform/chrome: cros_ec_uart: properly fix race condition") where devm_serdev_device_open() was called before fully initializing the device.
Fix the race by ensuring client ops are set before enabling the port via w1_uart_serdev_open().
{
"affected": [],
"aliases": [
"CVE-2025-22084"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-16T15:16:02Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nw1: fix NULL pointer dereference in probe\n\nThe w1_uart_probe() function calls w1_uart_serdev_open() (which includes\ndevm_serdev_device_open()) before setting the client ops via\nserdev_device_set_client_ops(). This ordering can trigger a NULL pointer\ndereference in the serdev controller\u0027s receive_buf handler, as it assumes\nserdev-\u003eops is valid when SERPORT_ACTIVE is set.\n\nThis is similar to the issue fixed in commit 5e700b384ec1\n(\"platform/chrome: cros_ec_uart: properly fix race condition\") where\ndevm_serdev_device_open() was called before fully initializing the\ndevice.\n\nFix the race by ensuring client ops are set before enabling the port via\nw1_uart_serdev_open().",
"id": "GHSA-73pc-m2pm-2mr8",
"modified": "2025-10-31T21:30:55Z",
"published": "2025-04-16T15:34:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22084"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0dd6770a72f138dabea9eae87f3da6ffa68f0d06"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4f750b84628080ff0d67bf1af67a4967b740acf2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/64ab50577c59bb7049bec6b5c42d1c38e4029f29"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cc6b0ec7cccbf66ef3621e9e93296b7bd1f52298"
}
],
"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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