CVE-2025-22084

w1: fix NULL pointer dereference in probe

Description

In 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().

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/4f750b84628080ff0d67bf1af67a4967b740acf2
https://git.kernel.org/stable/c/64ab50577c59bb7049bec6b5c42d1c38e4029f29
https://git.kernel.org/stable/c/cc6b0ec7cccbf66ef3621e9e93296b7bd1f52298
https://git.kernel.org/stable/c/0dd6770a72f138dabea9eae87f3da6ffa68f0d06

Frequently Asked Questions

What is the severity of CVE-2025-22084?: CVE-2025-22084 has not yet been assigned a CVSS score.
How to fix CVE-2025-22084?: To fix CVE-2025-22084, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-22084 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-22084 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-22084?: CVE-2025-22084 affects Linux Linux, Linux Linux.

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