CVE-2026-43426

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxf1407d5c66240b33d11a7f1a41d55ccf6a9d7647 < c7012fc73dab4829404fedeeaa8531f12ac8545faffected
LinuxLinuxf1407d5c66240b33d11a7f1a41d55ccf6a9d7647 < 51afaf919bbaacdd9cc9e146033ae0a743a42dd7affected
LinuxLinuxf1407d5c66240b33d11a7f1a41d55ccf6a9d7647 < 1899edac312ef17a7234851686e8a703f56d0a84affected
LinuxLinuxf1407d5c66240b33d11a7f1a41d55ccf6a9d7647 < 9c6159d5b72d5fc265cce5da04f27d730b552e69affected
LinuxLinuxf1407d5c66240b33d11a7f1a41d55ccf6a9d7647 < 6287e0c01ccb818e7214f88d885ffb7c9e81b0e0affected
LinuxLinuxf1407d5c66240b33d11a7f1a41d55ccf6a9d7647 < 0b7d11fd6e742ecc0b1eca44b4f0b93140c74baeaffected
LinuxLinuxf1407d5c66240b33d11a7f1a41d55ccf6a9d7647 < 6ffe44f022c95b1b29c691d2169c5abc046f7580affected
LinuxLinuxf1407d5c66240b33d11a7f1a41d55ccf6a9d7647 < 3cbc242b88c607f55da3d0d0d336b49bf1e20412affected
LinuxLinux3.0affected
LinuxLinux0 < 3.0unaffected
LinuxLinux5.10.253 <= 5.10.*unaffected
LinuxLinux5.15.203 <= 5.15.*unaffected
LinuxLinux6.1.167 <= 6.1.*unaffected
LinuxLinux6.6.130 <= 6.6.*unaffected
LinuxLinux6.12.78 <= 6.12.*unaffected
LinuxLinux6.18.19 <= 6.18.*unaffected
LinuxLinux6.19.9 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References