Bug 2426096 (CVE-2023-54244)

Summary: CVE-2023-54244 kernel: ACPI: EC: Fix oops when removing custom query handlers
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-12-30 13:08:46 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ACPI: EC: Fix oops when removing custom query handlers

When removing custom query handlers, the handler might still
be used inside the EC query workqueue, causing a kernel oops
if the module holding the callback function was already unloaded.

Fix this by flushing the EC query workqueue when removing
custom query handlers.

Tested on a Acer Travelmate 4002WLMi
Comment 1 Alexander B 2025-12-31 09:37:19 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123052-CVE-2023-54244-9a1f@gregkh/T