linux-kernel - [PATCH] HID: thrustmaster: fix memory leak in thrustmaster

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Message-Id: <20250327231146.6388-1-qasdev00@gmail.com>
Date: Thu, 27 Mar 2025 23:11:46 +0000
From: Qasim Ijaz <qasdev00@...il.com>
To: jikos@...nel.org,
	bentiss@...nel.org,
	mcoquelin.stm32@...il.com,
	alexandre.torgue@...s.st.com
Cc: linux-input@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] HID: thrustmaster: fix memory leak in thrustmaster_interrupts()

In thrustmaster_interrupts(), the allocated send_buf is not 
freed if the usb_check_int_endpoints() check fails, leading 
to a memory leak. 

Fix this by ensuring send_buf is freed before returning in 
the error path.

Fixes: 50420d7c79c3 ("HID: hid-thrustmaster: Fix warning in thrustmaster_probe by adding endpoint check")
Signed-off-by: Qasim Ijaz <qasdev00@...il.com>
---
 drivers/hid/hid-thrustmaster.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hid/hid-thrustmaster.c b/drivers/hid/hid-thrustmaster.c
index 3b81468a1df2..0bf70664c35e 100644
--- a/drivers/hid/hid-thrustmaster.c
+++ b/drivers/hid/hid-thrustmaster.c
@@ -174,6 +174,7 @@ static void thrustmaster_interrupts(struct hid_device *hdev)
 	u8 ep_addr[2] = {b_ep, 0};
 
 	if (!usb_check_int_endpoints(usbif, ep_addr)) {
+		kfree(send_buf);
 		hid_err(hdev, "Unexpected non-int endpoint\n");
 		return;
 	}
-- 
2.39.5