Linux Input/HID development
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From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: linux-input@vger.kernel.org
Cc: Thomas Fourier <fourier.thomas@gmail.com>,
	Seungjin Bae <eeodqql09@gmail.com>,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	Sashiko bot <sashiko-bot@kernel.org>
Subject: [PATCH 04/11] Input: ims-pcu - fix firmware leak in async update
Date: Fri, 22 May 2026 22:06:22 -0700	[thread overview]
Message-ID: <20260523050634.501509-4-dmitry.torokhov@gmail.com> (raw)
In-Reply-To: <20260523050634.501509-1-dmitry.torokhov@gmail.com>

The firmware object was not being released if validation failed.
Use __free(firmware) to ensure the firmware is always released.

Fixes: 628329d52474 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/misc/ims-pcu.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c
index a134483e543b..f86f9a5a7564 100644
--- a/drivers/input/misc/ims-pcu.c
+++ b/drivers/input/misc/ims-pcu.c
@@ -934,9 +934,10 @@ static int ims_pcu_handle_firmware_update(struct ims_pcu *pcu,
 	return retval;
 }
 
-static void ims_pcu_process_async_firmware(const struct firmware *fw,
+static void ims_pcu_process_async_firmware(const struct firmware *_fw,
 					   void *context)
 {
+	const struct firmware *fw __free(firmware) = _fw;
 	struct ims_pcu *pcu = context;
 	int error;
 
@@ -956,8 +957,6 @@ static void ims_pcu_process_async_firmware(const struct firmware *fw,
 	scoped_guard(mutex, &pcu->cmd_mutex)
 		ims_pcu_handle_firmware_update(pcu, fw);
 
-	release_firmware(fw);
-
 out:
 	complete(&pcu->async_firmware_done);
 }
-- 
2.54.0.746.g67dd491aae-goog


  parent reply	other threads:[~2026-05-23  5:06 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-23  5:06 [PATCH 01/11] Input: ims-pcu - release data interface on disconnect Dmitry Torokhov
2026-05-23  5:06 ` [PATCH 02/11] Input: ims-pcu - fix use-after-free and double-free in disconnect Dmitry Torokhov
2026-05-23  5:45   ` sashiko-bot
2026-05-23  5:06 ` [PATCH 03/11] Input: ims-pcu - fix type confusion in CDC union descriptor parsing Dmitry Torokhov
2026-05-23  5:52   ` sashiko-bot
2026-05-23  5:06 ` Dmitry Torokhov [this message]
2026-05-23  5:37   ` [PATCH 04/11] Input: ims-pcu - fix firmware leak in async update sashiko-bot
2026-05-23  5:06 ` [PATCH 05/11] Input: ims-pcu - fix race condition in reset_device sysfs callback Dmitry Torokhov
2026-05-23  7:12   ` sashiko-bot
2026-05-23  5:06 ` [PATCH 06/11] Input: ims-pcu - validate control endpoint type Dmitry Torokhov
2026-05-23  5:44   ` sashiko-bot
2026-05-23  5:06 ` [PATCH 07/11] Input: ims-pcu - fix logic error in packet reset Dmitry Torokhov
2026-05-23  6:25   ` sashiko-bot
2026-05-23  5:06 ` [PATCH 08/11] Input: ims-pcu - fix out-of-bounds read in ims_pcu_irq() debug logging Dmitry Torokhov
2026-05-23  5:39   ` sashiko-bot
2026-05-23  5:06 ` [PATCH 09/11] Input: ims-pcu - fix DMA mapping violation in line setup Dmitry Torokhov
2026-05-23  5:37   ` sashiko-bot
2026-05-23  5:06 ` [PATCH 10/11] Input: ims-pcu - add response length checks Dmitry Torokhov
2026-05-23  5:54   ` sashiko-bot
2026-05-23  5:06 ` [PATCH 11/11] Input: ims-pcu - fix potential infinite loop in CDC union descriptor parsing Dmitry Torokhov
2026-05-23  6:02   ` sashiko-bot
2026-05-23  5:46 ` [PATCH 01/11] Input: ims-pcu - release data interface on disconnect sashiko-bot

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