CVE-2025-38540: HID: quirks: Add quirk for 2 Chicony Electronics HP 5MP Cameras
In the Linux kernel, the following vulnerability has been resolved:
HID: quirks: Add quirk for 2 Chicony Electronics HP 5MP Cameras
The Chicony Electronics HP 5MP Cameras (USB ID 04F2:B824 & 04F2:B82C) report a HID sensor interface that is not actually implemented. Attempting to access this non-functional sensor via iioinfo causes system hangs as runtime PM tries to wake up an unresponsive sensor.
Add these 2 devices to the HID ignore list since the sensor interface is non-functional by design and should not be exposed to userspace.
Affected Software
Remediation
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Add the Chicony Electronics HP 5MP Cameras with USB IDs 04F2:B824 and 04F2:B82C to the HID ignore list so their non-functional HID sensor interfaces are not exposed to userspace.
Linux kernel HID quirks HID ignore list = 04F2:B824 and 04F2:B82C
Event History
Frequently Asked Questions
Which systems are exposed to the hang?
Systems using a Chicony Electronics HP 5MP Camera with USB ID 04F2:B824 or 04F2:B82C are affected when the camera's reported HID sensor interface is exposed to userspace.
What action triggers the issue?
A local user or process can trigger the hang by attempting to access the non-functional sensor interface with iio_info. Runtime power management then attempts to wake the unresponsive sensor.
Is there a workaround if the patch cannot be applied immediately?
Avoid accessing the affected cameras' HID sensor interface with iio_info. The issue is tied to the sensor interface that the devices report despite not implementing it.
How does the patch address the issue?
The patch adds USB IDs 04F2:B824 and 04F2:B82C to the HID ignore list, preventing their non-functional sensor interface from being exposed to userspace.