USB: serial: visor: fix crash on detecting device without write_urbs

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commit cb3232138e upstream.

The visor driver crashes in clie_5_attach() when a specially crafted USB
device without bulk-out endpoint is detected. This fix adds a check that
the device has proper configuration expected by the driver.

Reported-by: Ralf Spenneberg <ralf@spenneberg.net>
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Fixes: cfb8da8f69 ("USB: visor: fix initialisation of UX50/TH55 devices")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Vladis Dronov 2016-01-12 15:10:50 +01:00 • committed by Greg Kroah-Hartman

parent 2bbe5162ba

commit 2dc803d074

1 changed files with 4 additions and 2 deletions

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drivers/usb/serial/visor.c

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