Bug 2420255 (CVE-2023-53797)

Summary: CVE-2023-53797 kernel: HID: wacom: Use ktime_t rather than int when dealing with timestamps
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-12-09 01:03:39 UTC 
In the Linux kernel, the following vulnerability has been resolved:

HID: wacom: Use ktime_t rather than int when dealing with timestamps

Code which interacts with timestamps needs to use the ktime_t type
returned by functions like ktime_get. The int type does not offer
enough space to store these values, and attempting to use it is a
recipe for problems. In this particular case, overflows would occur
when calculating/storing timestamps leading to incorrect values being
reported to userspace. In some cases these bad timestamps cause input
handling in userspace to appear hung.
Comment 1 Alexander B 2025-12-10 06:47:38 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025120942-CVE-2023-53797-4a88@gregkh/T