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| author |  Kuen-Han Tsai <khtsai@google.com>
| 2023-06-02 15:00:06 +0800 |
|---|---|---|
| committer |  Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| 2023-06-13 11:55:09 +0200 |
| commit | ffd603f214237e250271162a5b325c6199a65382 (patch) | |
| tree | 8fc707c8dccfecaed01e094af1e5a3ed6c85dc8e /drivers/usb/misc | |
| parent | usb: typec: intel_pmc_mux: Expose IOM port status to debugfs (diff) | |
| download | linux-ffd603f214237e250271162a5b325c6199a65382.tar.gz linux-ffd603f214237e250271162a5b325c6199a65382.tar.bz2 linux-ffd603f214237e250271162a5b325c6199a65382.zip | |
usb: gadget: u_serial: Add null pointer check in gs_start_io
If gs_close has cleared port->port.tty and gs_start_io is called
afterwards, then the function tty_wakeup will attempt to access the value
of the pointer port->port.tty which will cause a null pointer
dereference error.
To avoid this, add a null pointer check to gs_start_io before attempting
to access the value of the pointer port->port.tty.
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Message-ID: <20230602070009.1353946-1-khtsai@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/misc')
0 files changed, 0 insertions, 0 deletions