CVE-2026-43426

Description

In the Linux kernel, the following vulnerability has been resolved: usb: renesas_usbhs: fix use-after-free in ISR during device removal In usbhs_remove(), the driver frees resources (including the pipe array) while the interrupt handler (usbhs_interrupt) is still registered. If an interrupt fires after usbhs_pipe_remove() but before the driver is fully unbound, the ISR may access freed memory, causing a use-after-free. Fix this by calling devm_free_irq() before freeing resources. This ensures the interrupt handler is both disabled and synchronized (waits for any running ISR to complete) before usbhs_pipe_remove() is called.

References

• https://git.kernel.org/stable/c/0b7d11fd6e742ecc0b1eca44b4f0b93140c74bae
• https://git.kernel.org/stable/c/1899edac312ef17a7234851686e8a703f56d0a84
• https://git.kernel.org/stable/c/3cbc242b88c607f55da3d0d0d336b49bf1e20412
• https://git.kernel.org/stable/c/51afaf919bbaacdd9cc9e146033ae0a743a42dd7
• https://git.kernel.org/stable/c/6287e0c01ccb818e7214f88d885ffb7c9e81b0e0