From: Pietro Borrello <borrello@diag.uniroma1.it>
To: Jiri Kosina <jikos@kernel.org>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>,
Hanno Zulla <kontakt@hanno.de>, Carlo Caione <carlo@endlessm.com>,
Pavel Machek <pavel@ucw.cz>, Lee Jones <lee@kernel.org>,
Roderick Colenbrander <roderick.colenbrander@sony.com>,
Sven Eckelmann <sven@narfation.org>
Cc: linux-leds@vger.kernel.org,
Cristiano Giuffrida <c.giuffrida@vu.nl>,
"Bos, H.J." <h.j.bos@vu.nl>, Jakob Koschel <jkl820.git@gmail.com>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
Jiri Kosina <jkosina@suse.cz>,
Roderick Colenbrander <roderick@gaikai.com>,
Pietro Borrello <borrello@diag.uniroma1.it>
Subject: [PATCH 3/5] HID: dualsense_remove: manually unregister leds
Date: Thu, 26 Jan 2023 00:24:55 +0000 [thread overview]
Message-ID: <20230125-hid-unregister-leds-v1-3-9a5192dcef16@diag.uniroma1.it> (raw)
In-Reply-To: <20230125-hid-unregister-leds-v1-0-9a5192dcef16@diag.uniroma1.it>
Unregister the LED controller before device removal, as
dualsense_player_led_set_brightness() may schedule output_worker
after the structure has been freed, causing a use-after-free.
Fixes: 8c0ab553b072 ("HID: playstation: expose DualSense player LEDs through LED class.")
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
---
drivers/hid/hid-playstation.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/hid/hid-playstation.c b/drivers/hid/hid-playstation.c
index 27c40894acab..9e23860b7e95 100644
--- a/drivers/hid/hid-playstation.c
+++ b/drivers/hid/hid-playstation.c
@@ -1503,11 +1503,15 @@ static void dualsense_remove(struct ps_device *ps_dev)
{
struct dualsense *ds = container_of(ps_dev, struct dualsense, base);
unsigned long flags;
+ int i;
spin_lock_irqsave(&ds->base.lock, flags);
ds->output_worker_initialized = false;
spin_unlock_irqrestore(&ds->base.lock, flags);
+ for (i = 0; i < ARRAY_SIZE(ds->player_leds); i++)
+ devm_led_classdev_unregister(&ps_dev->hdev->dev, &ds->player_leds[i]);
+
cancel_work_sync(&ds->output_worker);
}
--
2.25.1
next prev parent reply other threads:[~2023-01-26 0:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-26 0:24 [PATCH 0/5] HID: manually unregister leds on device removal to prevent UAFs Pietro Borrello
2023-01-26 0:24 ` [PATCH 1/5] HID: bigben_remove: manually unregister leds Pietro Borrello
2023-01-26 0:24 ` [PATCH 2/5] HID: asus_remove: manually unregister led Pietro Borrello
2023-01-26 0:24 ` Pietro Borrello [this message]
2023-01-26 0:43 ` [PATCH 3/5] HID: dualsense_remove: manually unregister leds Roderick Colenbrander
2023-01-26 0:47 ` Roderick Colenbrander
2023-01-26 12:09 ` [PATCH v2 " Pietro Borrello
2023-01-26 12:11 ` [PATCH v2 4/5] HID: dualshock4_remove: " Pietro Borrello
2023-01-26 1:01 ` [PATCH 3/5] HID: dualsense_remove: " Pietro Borrello
2023-01-26 0:24 ` [PATCH 4/5] HID: dualshock4_remove: " Pietro Borrello
2023-01-26 0:24 ` [PATCH 5/5] HID: sony_remove: " Pietro Borrello
2023-01-26 8:32 ` Sven Eckelmann
2023-05-10 10:12 ` [PATCH 0/5] HID: manually unregister leds on device removal to prevent UAFs Donald Buczek
2023-05-10 10:59 ` Benjamin Tissoires
2023-05-10 11:41 ` Pavel Machek
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