USB: sierra: fix use after free at suspend/resume

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Fix use after free or NULL-pointer dereference during suspend and
resume.

The port data may never have been allocated (port probe failed)
or may already have been released by port_remove (e.g. driver is
unloaded) when suspend and resume are called.

Fixes: e6929a9020 ("USB: support for autosuspend in sierra while
online")

Cc: <stable@vger.kernel.org>	# v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Johan Hovold 2014-05-26 19:22:51 +02:00 • committed by Greg Kroah-Hartman

parent 353fe19860

commit 8452727de7

1 changed files with 6 additions and 0 deletions

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6

drivers/usb/serial/sierra.c

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