CVE-2026-43426

A flaw was found in the Linux kernel's renesas_usbhs driver. This vulnerability occurs during the removal of a USB device, where the driver frees memory resources before fully unregistering its interrupt handler. If an interrupt fires during this critical window, the interrupt service routine (ISR) attempts to access memory that has already been deallocated, leading to a use-after-free condition. This can result in system instability or a denial of service (DoS).