[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20211206145617.389957289@linuxfoundation.org>
Date: Mon, 6 Dec 2021 15:57:39 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Filip Kokosinski <fkokosinski@...micro.com>,
Mateusz Holenko <mholenko@...micro.com>,
Stafford Horne <shorne@...il.com>,
Andy Shevchenko <andy.shevchenko@...il.com>,
Johan Hovold <johan@...nel.org>
Subject: [PATCH 5.15 205/207] serial: liteuart: fix use-after-free and memleak on unbind
From: Johan Hovold <johan@...nel.org>
commit 05f929b395dec8957b636ff14e66b277ed022ed9 upstream.
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@...r.kernel.org # 5.11
Cc: Filip Kokosinski <fkokosinski@...micro.com>
Cc: Mateusz Holenko <mholenko@...micro.com>
Reviewed-by: Stafford Horne <shorne@...il.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Johan Hovold <johan@...nel.org>
Link: https://lore.kernel.org/r/20211117100512.5058-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/tty/serial/liteuart.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/tty/serial/liteuart.c
+++ b/drivers/tty/serial/liteuart.c
@@ -295,6 +295,7 @@ static int liteuart_remove(struct platfo
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;
Powered by blists - more mailing lists