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USB: pl2303: fix use-after-free in TIOCMIWAIT
authorJohan Hovold <jhovold@gmail.com>
Tue, 19 Mar 2013 08:21:22 +0000 (09:21 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 21 Mar 2013 22:59:05 +0000 (15:59 -0700)
commit40509ca982c00c4b70fc00be887509feca0bff15
tree3e2bd8f1336ea2690086bb596e6d87bc90420955tree | snapshot
parent8edfdab37157d2683e51b8be5d3d5697f66a9f7bcommit | diff
USB: pl2303: 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/pl2303.c diff | blob | history
Domain: System / Uncategorized;