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CVE-2026-89469

8.4 · HIGH

In the Linux kernel, the following vulnerability has been resolved: power: supply: lp8727: fix use-after-free in lp8727_release_irq() lp8727_isr_func(), the threaded IRQ handler, is the only call…

Published Sep 11, 2026EPSS 0.14%

Overview

CVE-2026-89469 is a high-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

power: supply: lp8727: fix use-after-free in lp8727_release_irq()

lp8727_isr_func(), the threaded IRQ handler, is the only caller that arms

pchg->work via schedule_delayed_work(). lp8727_release_irq() currently

cancels the work before freeing the IRQ, so an IRQ delivered in between

can re-arm the work through the threaded handler. After .remove returns

the devm layer frees pchg while lp8727_delayed_func() may still run and

dereference it.

Free the IRQ first so the threaded handler is quiesced and can no longer

queue work, then cancel the delayed work to drain the final generation.

This issue was found by an in-house static analysis tool.

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/035cc6bc4d412dd4302862e8f859b784fcd4653bRefgit.kernel.org/stable/c/1321a4e6247164312eabc6d07f88572da2ee308cRefgit.kernel.org/stable/c/6ab3128292df67295de1b2a86f21d89cf6612a7eRefgit.kernel.org/stable/c/6f0ce09d60a0e4fab6f9ebe8294750481f0c19ddRefgit.kernel.org/stable/c/80d4e40a85ba524e66c8c748aa7bb19eaf2f69dfRefgit.kernel.org/stable/c/ab6b1ad710bed7931540733ce145493fece8ceefRefgit.kernel.org/stable/c/ceb6ac43b0f591722401922ceb958ce2616935e0Refgit.kernel.org/stable/c/dc1dc2837f8e53bde2f16d52a63f4142e21757f1

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89469?

CVE-2026-89469 is a high-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-89469?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-89469?

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-2026-89469?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89469 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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