What’s Vulnerable › Vulnerabilities
CVE-2023-54244: ACPI: EC: Fix oops when removing custom query handlers
- Severity: unknown
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-12-30 · updated 2026-06-17
Description
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
Affected products
- Linux kernel: from 2.6.32.6 before 2.6.33; 2.6.33 — fixed in 2.6.33, 6.4
How to fix
Upgrade to a fixed version: Linux kernel 2.6.33, 6.4. Check the vendor advisory for mitigations.
References
- https://git.kernel.org/stable/c/066b90bca755f0b876e7b027b75d1796861d6db0
- https://git.kernel.org/stable/c/0d528a7c421b1f1772fc1d29370b3b5fc0f42b19
- https://git.kernel.org/stable/c/130e3eac51912f2c866e7d035992ede25f8feac0
- https://git.kernel.org/stable/c/86a159fd5bdb01ec34b160cfda1a313b616d9302
- https://git.kernel.org/stable/c/ccae2233e9935a038a35fe8cfd703df905f700e7
- https://git.kernel.org/stable/c/e5b492c6bb900fcf9722e05f4a10924410e170c1
- https://git.kernel.org/stable/c/f4a573eed6377d356f835a4b00099d5dacee0da0
- https://git.kernel.org/stable/c/fd2c99e81ae0dbdd62a154ef9c77fc01715cc020
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