USB: console: fix potential use after free

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commit 32a4bf2e81 upstream.

Use tty kref to release the fake tty in usb_console_setup to avoid use
after free if the underlying serial driver has acquired a reference.

Note that using the tty destructor release_one_tty requires some more
state to be initialised.

Fixes: 4a90f09b20 ("tty: usb-serial krefs")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

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Johan Hovold 2015-01-05 16:04:13 +01:00 • committed by Luis Henriques

parent 6b03e26e12

commit 2b78e4b755

1 changed files with 10 additions and 5 deletions

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drivers/usb/serial/console.c

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