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USB: f81232: fix use-after-free in TIOCMIWAIT
authorJohan Hovold <jhovold@gmail.com>
Tue, 19 Mar 2013 08:21:14 +0000 (09:21 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 21 Mar 2013 22:59:03 +0000 (15:59 -0700)
commit508f940f1407656076a2e7d8f7fa059b567ecac2
treea4ea91f143a67db1f733e2c46a3e6d3509d328cetree | snapshot
parent356050d8b1e526db093e9d2c78daf49d6bf418e3commit | diff
USB: f81232: fix use-after-free in TIOCMIWAIT

Use the port wait queue and make sure to check the serial disconnected
flag before accessing private port data after waking up.

This is is needed as the private port data (including the wait queue
itself) can be gone when waking up after a disconnect.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/serial/f81232.c diff | blob | history
Linux kernel for KaRo TX COM modules