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CVE-2026-89469

HIGHCVSS 8.4/10EPSS 0.14%

Last modified

CVE-2026-89469 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. 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. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.4/10

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

EPSS Probability
0.14%

3.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= d71fda01610269e3aaedd451f8d3e34cdf550036, < 1321a4e6247164312eabc6d07f88572da2ee308c; >= d71fda01610269e3aaedd451f8d3e34cdf550036, < dc1dc2837f8e53bde2f16d52a63f4142e21757f1; >= d71fda01610269e3aaedd451f8d3e34cdf550036, < 035cc6bc4d412dd4302862e8f859b784fcd4653b; >= d71fda01610269e3aaedd451f8d3e34cdf550036, < 6f0ce09d60a0e4fab6f9ebe8294750481f0c19dd; >= d71fda01610269e3aaedd451f8d3e34cdf550036, < 80d4e40a85ba524e66c8c748aa7bb19eaf2f69df; >= d71fda01610269e3aaedd451f8d3e34cdf550036, < ab6b1ad710bed7931540733ce145493fece8ceef; >= d71fda01610269e3aaedd451f8d3e34cdf550036, < 6ab3128292df67295de1b2a86f21d89cf6612a7e; >= d71fda01610269e3aaedd451f8d3e34cdf550036, < ceb6ac43b0f591722401922ceb958ce2616935e0
LinuxLinux3.7

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-89469?
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.
How severe is CVE-2026-89469?
CVE-2026-89469 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2026-89469?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST