Is CVE-2025-39771 in the CISA KEV catalog?

No. CVE-2025-39771 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-39771?

CVE-2025-39771 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2025-39771?

CVE-2025-39771 has an EPSS score of 0.12% (2th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-39771?

Upgrade linux on debian unstable to 6.16.5-1 or later.

CVE & CISA-KEV Catalog

CVE-2025-39771

MEDIUM

5.5

CVSS v3

NVD

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.

How to fix

Remediation Available

linuxDebian

Fixed in:6.16.5-1CVE-2025-39771

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.12%probability of exploitation in 30 days

2ndpercentile

Low risk: more likely to be exploited than 2% of all known CVEs.

References

Patch2

Embed a live status badge for CVE-2025-39771

Markdown

[![CVE-2025-39771](https://tridentstack.com/cve/badge/CVE-2025-39771.svg)](https://tridentstack.com/cve/CVE-2025-39771)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-39771"><img src="https://tridentstack.com/cve/badge/CVE-2025-39771.svg" alt="CVE-2025-39771"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-25.