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The MOST subsystem has a non-standard registration function which frees the interface on registration failures and on deregistration. This unsurprisingly leads to bugs in the MOST drivers, and a couple of recent changes turned a reference underflow and use-after-free in the USB driver into several double free and a use-after-free on late probe failures. Fixes:723de0f917("staging: most: remove device from interface structure") Fixes:4b12709026("most: usb: Fix use-after-free in hdm_disconnect") Fixes:a8cc9e5fcb("most: usb: hdm_probe: Fix calling put_device() before device initialization") Cc: stable@vger.kernel.org Cc: Christian Gromm <christian.gromm@microchip.com> Cc: Victoria Votokina <Victoria.Votokina@kaspersky.com> Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://patch.msgid.link/20251029093029.28922-1-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>