Fan Wu 6287e0c01c usb: renesas_usbhs: fix use-after-free in ISR during device removal ...

commit 3cbc242b88 upstream.

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.

Fixes: f1407d5c66 ("usb: renesas_usbhs: Add Renesas USBHS common code")
Cc: stable <stable@kernel.org>
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Link: https://patch.msgid.link/20260303073344.34577-1-fanwu01@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-03-25 11:08:32 +01:00

..

common.c

usb: renesas_usbhs: fix use-after-free in ISR during device removal

2026-03-25 11:08:32 +01:00

common.h

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fifo.c

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fifo.h

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Kconfig

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Makefile

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mod_gadget.c

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mod_host.c

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mod.c

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mod.h

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pipe.c

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pipe.h

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rcar2.c

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rcar2.h

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rcar3.c

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rcar3.h

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rza2.c

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rza.c

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rza.h

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