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By Zayden R., August 23, 2026
Linux 7.3's input subsystem sees key updates, including security fixes and driver improvements. Engineers should note changes to the Synaptics RMI4 driver and new haptic motor support.
Linux 7.3 has ushered in a set of significant updates to its input subsystem, delivering both security enhancements and driver improvements that are sure to catch the eye of system administrators and developers alike. Among these updates, the Synaptics RMI4 driver now leverages touchscreen dimensions from platform data when available, a change that could streamline configurations and enhance device compatibility.
Another noteworthy addition is the integration of InterTouch SMBus mode for the Dell Inspiron 3521 laptop, a move that underscores the kernel's ongoing commitment to optimizing hardware interactions. Engineers working with mobile devices should pay attention to the new driver for the Imagis ISA1200 haptic motor driver IC, which is now supported on devices like the Samsung Galaxy Tab 10.1.
Security remains a top priority, and the Linux psmouse driver has been fortified against potential use-after-free vulnerabilities in its protocol disconnect code. This is complemented by fixes for under-flows in the FocalTech PS/2 driver, ensuring robust and reliable input handling across a range of devices.
The input core code has also received enhancements, particularly in the areas of opening, closing, and inhibiting devices. These changes are designed to ensure input devices are fully operational before they begin delivering events, which could lead to more reliable device initialization and event handling.
These updates, already merged for the Linux 7.3 window, reflect the kernel community's ongoing efforts to address both functionality and security. Engineers should review these changes closely, particularly those managing systems with affected hardware, to assess the direct impact on their environments.
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