linux-kernel - [PATCH v2 1/3] staging: rtl8723bs: fix firmware memory leak on error

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Message-ID: <20260108181612.2340796-2-samasth.norway.ananda@oracle.com>
Date: Thu,  8 Jan 2026 10:16:09 -0800
From: Samasth Norway Ananda <samasth.norway.ananda@...cle.com>
To: dan.carpenter@...aro.org, gregkh@...uxfoundation.org
Cc: linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/3] staging: rtl8723bs: fix firmware memory leak on error

After successfully calling request_firmware(), if the firmware size
check fails or if kmemdup() fails, the code jumps to the exit label
without calling release_firmware(), causing a memory leak. Call
release_firmware() directly in each error path before jumping to cleanup
label.

Signed-off-by: Samasth Norway Ananda <samasth.norway.ananda@...cle.com>
---
 drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
index 57c83f332e74..56ceedd5a26a 100644
--- a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
+++ b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
@@ -346,12 +346,14 @@ s32 rtl8723b_FirmwareDownload(struct adapter *padapter, bool  bUsedWoWLANFw)
 
 	if (fw->size > FW_8723B_SIZE) {
 		rtStatus = _FAIL;
+		release_firmware(fw);
 		goto exit;
 	}
 
 	pFirmware->fw_buffer_sz = kmemdup(fw->data, fw->size, GFP_KERNEL);
 	if (!pFirmware->fw_buffer_sz) {
 		rtStatus = _FAIL;
+		release_firmware(fw);
 		goto exit;
 	}
 
-- 
2.50.1