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Unrated severityNVD Advisory· Published May 21, 2024· Updated May 4, 2025

Input: synaptics-rmi4 - fix use after free in rmi_unregister_function()

CVE-2023-52840

Description

In the Linux kernel, the following vulnerability has been resolved:

Input: synaptics-rmi4 - fix use after free in rmi_unregister_function()

The put_device() calls rmi_release_function() which frees "fn" so the dereference on the next line "fn->num_of_irqs" is a use after free. Move the put_device() to the end to fix this.

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252

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