Bug 2348178 (CVE-2022-49508)

Summary: CVE-2022-49508 kernel: HID: elan: Fix potential double free in elan_input_configured
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:20:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

HID: elan: Fix potential double free in elan_input_configured

'input' is a managed resource allocated with devm_input_allocate_device(),
so there is no need to call input_free_device() explicitly or
there will be a double free.

According to the doc of devm_input_allocate_device():
 * Managed input devices do not need to be explicitly unregistered or
 * freed as it will be done automatically when owner device unbinds from
 * its driver (or binding fails).
Comment 1 Avinash Hanwate 2025-02-26 21:55:15 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022609-CVE-2022-49508-c351@gregkh/T