linux-kernel - [PATCH AUTOSEL 6.6 12/38] HID: nvidia-shield: Add missing null pointer checks to LED initialization

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: Wed,  7 Feb 2024 16:22:58 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Kunwu Chan <chentao@...inos.cn>,
	Rahul Rameshbabu <rrameshbabu@...dia.com>,
	Jiri Kosina <jkosina@...e.com>,
	Sasha Levin <sashal@...nel.org>,
	jikos@...nel.org,
	benjamin.tissoires@...hat.com,
	linux-input@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 12/38] HID: nvidia-shield: Add missing null pointer checks to LED initialization

From: Kunwu Chan <chentao@...inos.cn>

[ Upstream commit b6eda11c44dc89a681e1c105f0f4660e69b1e183 ]

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

[jkosina@...e.com: tweak changelog a bit]
Signed-off-by: Kunwu Chan <chentao@...inos.cn>
Reviewed-by: Rahul Rameshbabu <rrameshbabu@...dia.com>
Signed-off-by: Jiri Kosina <jkosina@...e.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/hid/hid-nvidia-shield.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/hid/hid-nvidia-shield.c b/drivers/hid/hid-nvidia-shield.c
index c463e54decbc..edd0b0f1193b 100644
--- a/drivers/hid/hid-nvidia-shield.c
+++ b/drivers/hid/hid-nvidia-shield.c
@@ -800,6 +800,8 @@ static inline int thunderstrike_led_create(struct thunderstrike *ts)
 
 	led->name = devm_kasprintf(&ts->base.hdev->dev, GFP_KERNEL,
 				   "thunderstrike%d:blue:led", ts->id);
+	if (!led->name)
+		return -ENOMEM;
 	led->max_brightness = 1;
 	led->flags = LED_CORE_SUSPENDRESUME | LED_RETAIN_AT_SHUTDOWN;
 	led->brightness_get = &thunderstrike_led_get_brightness;
@@ -831,6 +833,8 @@ static inline int thunderstrike_psy_create(struct shield_device *shield_dev)
 	shield_dev->battery_dev.desc.name =
 		devm_kasprintf(&ts->base.hdev->dev, GFP_KERNEL,
 			       "thunderstrike_%d", ts->id);
+	if (!shield_dev->battery_dev.desc.name)
+		return -ENOMEM;
 
 	shield_dev->battery_dev.psy = power_supply_register(
 		&hdev->dev, &shield_dev->battery_dev.desc, &psy_cfg);
-- 
2.43.0