lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 27 Nov 2017 11:48:39 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bamvor Jian Zhang <bamvor.zhangjian@...aro.org>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <brgl@...ev.pl>
Subject: [PATCH 03/18] gpio: mockup: verify the number of GPIO chips requested

The number of supported mockup chips is limited. Check this limit when
parsing the module parameters.

Also: make sure that each chip is described with a <base - ngpio> pair.

Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>
---
 drivers/gpio/gpio-mockup.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
index b70f3b0c30b1..0a269cbe197c 100644
--- a/drivers/gpio/gpio-mockup.c
+++ b/drivers/gpio/gpio-mockup.c
@@ -330,7 +330,9 @@ static int __init gpio_mockup_init(void)
 {
 	int err;
 
-	if (gpio_mockup_params_nr < 2 || (gpio_mockup_params_nr % 2))
+	if ((gpio_mockup_params_nr < 2) ||
+	    (gpio_mockup_params_nr % 2) ||
+	    (gpio_mockup_params_nr > GPIO_MOCKUP_MAX_RANGES))
 		return -EINVAL;
 
 	gpio_mockup_dbg_dir = debugfs_create_dir("gpio-mockup-event", NULL);
-- 
2.15.0

Powered by blists - more mailing lists