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CVE-2025-38270

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: drv: netdevsim: don't napi_complete() from netpoll netdevsim supports netpoll.

Published Jul 10, 2025EPSS 0.20%

Overview

CVE-2025-38270 is a high-severity vulnerability. It was published on July 10, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

net: drv: netdevsim: don't napi_complete() from netpoll

netdevsim supports netpoll. Make sure we don't call napi_complete()

from it, since it may not be scheduled. Breno reports hitting a

warning in napi_complete_done():

WARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560

__napi_poll+0x2d8/0x3a0

handle_softirqs+0x1fe/0x710

This is presumably after netpoll stole the SCHED bit prematurely.

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/1264971017b4d7141352a7fe29021bdfce5d885dRefgit.kernel.org/stable/c/6837dd877270c57689bd866de9f3de14172c2439Refgit.kernel.org/stable/c/a8ff2e362d901200a1075c3ca9c56d9c7bbef389

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38270?

CVE-2025-38270 is a high-severity vulnerability. It was published on July 10, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-38270?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-38270?

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-2025-38270?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38270 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.

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