USB: serial: fix potential stack buffer overflow

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commit d979e9f9ec upstream.

Make sure to verify the maximum number of endpoints per type to avoid
writing beyond the end of a stack-allocated array.

The current usb-serial implementation is limited to eight ports per
interface but failed to verify that the number of endpoints of a certain
type reported by a device did not exceed this limit.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2014-08-27 11:55:18 +02:00 • committed by Greg Kroah-Hartman

parent 133f1fc755

commit eb587be439

1 changed files with 22 additions and 10 deletions

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drivers/usb/serial/usb-serial.c

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