From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C0571346FC3; Fri, 4 Sep 2026 06:03:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788501787; cv=none; b=NAImUSY3iBNIRrhshXUyaKU4aj9q3NX9KcBcgsEneWruOzSauTeo6KmTZD65ycSU6zlhbLXy4hoon8nI6QP+lObTAzGvWidh5zJeUSlpf4ecYxFDUDKvIaMbJYoAntN1y7pVB+HNRmfVTxxkaH4wQ8v9R5tae5sTwr/v1netiDg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788501787; c=relaxed/simple; bh=LBzUMEVJ2FXawS1i3e6XxEpUfZYJJ6G3ZziYrZzdEBc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=L+E5u/Ld5RV9/wLtOgfdoXRe3EPHqTyCZrHeUDllUmnOVE+vqyWgRJxcd5p/h2y1Kv8ofMUATeG45KDGHzENtX3+8tg73sCphycIJXUkJeYWoOnNQTiCJzolZBDpko7PfwWAOG1UkllE2JnV89t1XOIARlBp5vAwJsODOb4Dyok= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=hOGbCT1a; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="hOGbCT1a" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D0FEB1F00A3D; Fri, 4 Sep 2026 06:03:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788501786; bh=pQUI3/fFpNJAqwui2W+bJaV8LeiDjDC05RmbrFekXaY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hOGbCT1a4xkFT4POQvqgBmE7wvm81GupyHSRft5//CJ20l1tjc1gMNrrufdqPjLAe hasaLk7NfOrNEA9FidOhogm9fKqhNcelAgOhMs8nzXj6ib87NxjmPIhL/R53MgoaHA UekURml0HYhDXqGxDCQrfVgKmu+R3FDHmnoBX7Jk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Abdun Nihaal , Ping-Ke Shih Subject: [PATCH 6.18 530/552] wifi: rtlwifi: rtl8192du: Fix possible memory leak in rtl92du_init_sw_vars() Date: Fri, 4 Sep 2026 07:01:27 +0200 Message-ID: <20260904045802.635695872@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260904045747.813364717@linuxfoundation.org> References: <20260904045747.813364717@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Abdun Nihaal commit 6496ce90845df2d22fb8e8ed235cd2936fad41c8 upstream. The memory allocated inside rtl92du_init_shared_data() is not freed in any of the subsequent error paths in rtl92du_init_sw_vars(). Fix that by adding a call to rtl92du_deinit_shared_data() in the error path. Fixes: b5dc8873b6ff ("wifi: rtlwifi: Add rtl8192du/sw.c") Cc: stable@vger.kernel.org Signed-off-by: Abdun Nihaal Acked-by: Ping-Ke Shih Signed-off-by: Ping-Ke Shih Link: https://patch.msgid.link/20260723114539.136986-1-nihaal@cse.iitm.ac.in Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/realtek/rtlwifi/rtl8192du/sw.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192du/sw.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192du/sw.c @@ -147,8 +147,10 @@ static int rtl92du_init_sw_vars(struct i /* for firmware buf */ rtlpriv->rtlhal.pfirmware = kmalloc(0x8000, GFP_KERNEL); - if (!rtlpriv->rtlhal.pfirmware) - return -ENOMEM; + if (!rtlpriv->rtlhal.pfirmware) { + err = -ENOMEM; + goto error; + } rtlpriv->max_fw_size = 0x8000; pr_info("Driver for Realtek RTL8192DU WLAN interface\n"); @@ -162,10 +164,14 @@ static int rtl92du_init_sw_vars(struct i pr_err("Failed to request firmware!\n"); kfree(rtlpriv->rtlhal.pfirmware); rtlpriv->rtlhal.pfirmware = NULL; - return err; + goto error; } return 0; + +error: + rtl92du_deinit_shared_data(hw); + return err; } static void rtl92du_deinit_sw_vars(struct ieee80211_hw *hw)