Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2025-39771

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: regulator: pca9450: Use devm_register_sys_off_handler With module test, there is error dump: ------------[ cut here ]----------…

Published Sep 11, 2025EPSS 0.13%

Overview

CVE-2025-39771 is a medium-severity vulnerability. It was published on September 11, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

regulator: pca9450: Use devm_register_sys_off_handler

With module test, there is error dump:

------------[ cut here ]------------

notifier callback pca9450_i2c_restart_handler already registered

WARNING: kernel/notifier.c:23 at notifier_chain_register+0x5c/0x88,

CPU#0: kworker/u16:3/50

Call trace:

notifier_chain_register+0x5c/0x88 (P)

atomic_notifier_chain_register+0x30/0x58

register_restart_handler+0x1c/0x28

pca9450_i2c_probe+0x418/0x538

i2c_device_probe+0x220/0x3d0

really_probe+0x114/0x410

__driver_probe_device+0xa0/0x150

driver_probe_device+0x40/0x114

__device_attach_driver+0xd4/0x12c

So use devm_register_sys_off_handler to let kernel handle the resource

free to avoid kernel dump.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/447be50598c05499f7ccc2b1f6ddb3da30f8099aRefgit.kernel.org/stable/c/7a8c8aa0b0b2c62a0232bf868def85f3069ba7a7

How CyberStrike helps

Frequently asked questions

What is CVE-2025-39771?

CVE-2025-39771 is a medium-severity vulnerability. It was published on September 11, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-39771?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-39771?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-39771?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-39771 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2025

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999