diff options
| author |   Johan Hovold <johan@kernel.org> | 2021-11-17 11:05:10 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-25 18:25:49 +0100 |
| commit | 05f929b395dec8957b636ff14e66b277ed022ed9 (patch) | |
| tree | 536f70b0347e138ef0ddf38d8b3ac894e8e483c6 | |
| parent | serial: liteuart: Fix NULL pointer dereference in ->remove() (diff) | |
| download | wireguard-linux-05f929b395dec8957b636ff14e66b277ed022ed9.tar.xz wireguard-linux-05f929b395dec8957b636ff14e66b277ed022ed9.zip | |
serial: liteuart: fix use-after-free and memleak on unbind
Deregister the port when unbinding the driver to prevent it from being
used after releasing the driver data and leaking memory allocated by
serial core.
Fixes: 1da81e5562fa ("drivers/tty/serial: add LiteUART driver")
Cc: stable@vger.kernel.org # 5.11
Cc: Filip Kokosinski <fkokosinski@antmicro.com>
Cc: Mateusz Holenko <mholenko@antmicro.com>
Reviewed-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211117100512.5058-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/liteuart.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c index f075f4ff5fcf..da792d0df790 100644 --- a/drivers/tty/serial/liteuart.c +++ b/drivers/tty/serial/liteuart.c @@ -295,6 +295,7 @@ static int liteuart_remove(struct platform_device *pdev) struct uart_port *port = platform_get_drvdata(pdev); struct liteuart_port *uart = to_liteuart_port(port); + uart_remove_one_port(&liteuart_driver, port); xa_erase(&liteuart_array, uart->id); return 0; |