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.

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/035cc6bc4d412dd4302862e8f859b784fcd4653b
https://git.kernel.org/stable/c/1321a4e6247164312eabc6d07f88572da2ee308c
https://git.kernel.org/stable/c/6ab3128292df67295de1b2a86f21d89cf6612a7e
https://git.kernel.org/stable/c/6f0ce09d60a0e4fab6f9ebe8294750481f0c19dd
https://git.kernel.org/stable/c/80d4e40a85ba524e66c8c748aa7bb19eaf2f69df
https://git.kernel.org/stable/c/ab6b1ad710bed7931540733ce145493fece8ceef
https://git.kernel.org/stable/c/ceb6ac43b0f591722401922ceb958ce2616935e0
https://git.kernel.org/stable/c/dc1dc2837f8e53bde2f16d52a63f4142e21757f1

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-14 13:19

NVD link : CVE-2026-89469

Mitre link : CVE-2026-89469

CVE.ORG link : CVE-2026-89469

JSON object : View

Products Affected

No product.

CWE

No CWE.

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After .remove returns\nthe devm layer frees pchg while lp8727_delayed_func() may still run and\ndereference it.\n\nFree the IRQ first so the threaded handler is quiesced and can no longer\nqueue work, then cancel the delayed work to drain the final generation.\n\nThis issue was found by an in-house static analysis tool."}], "lastModified": "2026-09-14T13:19:03.157", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}