Bug 2400698 (CVE-2023-53454)

Summary: CVE-2023-53454 kernel: HID: multitouch: Correct devm device reference for hidinput input_dev name
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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OS: Linux   
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Description OSIDB Bzimport 2025-10-01 12:02:21 UTC 
In the Linux kernel, the following vulnerability has been resolved:

HID: multitouch: Correct devm device reference for hidinput input_dev name

Reference the HID device rather than the input device for the devm
allocation of the input_dev name. Referencing the input_dev would lead to a
use-after-free when the input_dev was unregistered and subsequently fires a
uevent that depends on the name. At the point of firing the uevent, the
name would be freed by devres management.

Use devm_kasprintf to simplify the logic for allocating memory and
formatting the input_dev name string.
Comment 1 Jon Moroney 2025-10-01 23:35:03 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100104-CVE-2023-53454-5ee6@gregkh/T