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 4DBC52E7390; Sun, 7 Jun 2026 10:49:42 +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=1780829383; cv=none; b=XldHWjo+K4L4yN5JvbBTHjRDl8c2osaXzD4AkMe91pA6gjTI3ftauAo+UydNVpc8dWh8LP0Devz4eSpD1HUifG8CBrwtyVzXTsPFvKPc4AnTfdHk8oIE1FI4ugti1Y7WdoofhoLroLjGzK9W3vQl221sbvxWFe6nmT9Uw50eB1U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780829383; c=relaxed/simple; bh=QTqthjTLXLnyhvfiSifj9snNfnZ6azXR5MkssYXam28=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hzVgxAwlWPAwTydADCC2COXkWmiuRnsNmoNOW/qpCjqADD7e8t0IosLzTLC5KNNhFk3ezRHUVdmrfBcnQiz7UBy9nuUPJvHRR1S5bShKvBzK9HtvFyt43XFK3zGGnzTbXK+QOsReaa5WVHFhjc6PqwZg9ZvoPeQz+ucHnO/TOlk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ANsedkTH; 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="ANsedkTH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82E951F00893; Sun, 7 Jun 2026 10:49:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780829382; bh=/X9Jcpv26XutaUb7YNbfndMZ9IbQABy93oXkhVb7qbI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ANsedkTHPI8MU1ILD/15bZFpCrk2X8oxFRB1VDhq6smFM9RFlZT9T1zrtHbrm4vFS WYhmuwf78VIjRY1pYYYhBamtmJefWbVbp/brHMy5re+GCgBQFvnbIW40A72Mzy/+p9 lpQAjxIcIDvavINakwUNSnq8UxxcPhgFWvVlmmD0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Guangshuo Li , Alan Stern Subject: [PATCH 7.0 274/332] usb: gadget: net2280: Fix double free in probe error path Date: Sun, 7 Jun 2026 12:00:43 +0200 Message-ID: <20260607095738.112142154@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260607095728.031258202@linuxfoundation.org> References: <20260607095728.031258202@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 7.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Guangshuo Li commit c8547c74988e0b5f4cbb1b895e2a57aae084f070 upstream. usb_initialize_gadget() installs gadget_release() as the release callback for the embedded gadget device. The struct net2280 instance is therefore released through gadget_release() when the gadget device's last reference is dropped. The probe error path calls net2280_remove(), which tears down the partially initialized device and drops the gadget reference with usb_put_gadget(). Calling kfree(dev) afterwards can free the same object again. Drop the explicit kfree() and let the gadget device release callback handle the final free. This issue was found by a static analysis tool I am developing. Fixes: f770fbec4165 ("USB: UDC: net2280: Fix memory leaks") Cc: stable Signed-off-by: Guangshuo Li Reviewed-by: Alan Stern Link: https://patch.msgid.link/20260427153651.337846-1-lgs201920130244@gmail.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/net2280.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -3790,10 +3790,8 @@ static int net2280_probe(struct pci_dev return 0; done: - if (dev) { + if (dev) net2280_remove(pdev); - kfree(dev); - } return retval; }