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 80DBF2BEC23 for ; Tue, 14 Jul 2026 13:26:54 +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=1784035615; cv=none; b=IyG34kaW0WE9VX3ZFpLP0+0hvt+VZs4jLXzjSinNl5INFR13ZCEXQdkMaeXDtwYa3VXzuHCtEMUrt28Uzi5wsYtIgn1yHZhTlXC+hNf8Ppc+W+D6L9xLwQ6tI3ynvM3QMjfFuSXih72wwFOhQa3QuDpt5X4092+sqRN6xWU0AYY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784035615; c=relaxed/simple; bh=PdiQavlmqwGUfra83cfuOhDVTyEkJYfELEI8fmdafTs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=r8dj1+salZuz3jIbTYDGHsXgDV1ej4HXbwKM/69Hm1g1YlHpK3qJJ1H36Wr10FpQ7zewPU1kX3L0GX7E+HL8lum5zB5T1w6cTJPR4hNYdfv9D/KU2IFV1tBaWB3WGQb6RFEUghV41KXCvhIl0GcIxdjQXIJhD6Nud4ZSa1wgTGw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hyF0GQXp; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hyF0GQXp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CE7E51F00A3F; Tue, 14 Jul 2026 13:26:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784035614; bh=NcWl39nyMnYwGn5Bb5yiWqMKcPHuLw/Wn51vhwyaB4k=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hyF0GQXpsYHozgUxfHCqCt8K6nWybFsbF1BdqoXaoHkogiMN123GMfZv1cK30uSVQ RIOghIF+ynTAuSNPsvrARSfVHJpE2ewfUIeroJTqBhpkSbzRcIValZmguYuAaWhOqB noxasgAObmWy+k77n7i9qwvs+TeqYS7cNp6ZkedSPQcAIcU3mOenLVlaAO/3QOrScx x9Jdd0RL5mjdyQQRczmb4oK4WeSWOZVOqy/54d8nht/cNbARtxn1BL80fFBgkuFkZj yX7dOTRLYZdmhw0fOVNz17RJFupEO0xLQ9Tw+R9YehCvcR+Y86oOwNzCjPOzVAPdkV kcYWpj59JJbDA== From: Sasha Levin To: stable@vger.kernel.org Cc: Johan Hovold , Paul Menzel , Luiz Augusto von Dentz , Sasha Levin Subject: [PATCH 5.10.y 3/4] Bluetooth: btusb: fix use-after-free on registration failure Date: Tue, 14 Jul 2026 09:26:49 -0400 Message-ID: <20260714132650.2663656-3-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260714132650.2663656-1-sashal@kernel.org> References: <2026071309-contempt-purposely-3c5c@gregkh> <20260714132650.2663656-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Johan Hovold [ Upstream commit eedc6867ebad73edbfaf9a0a65fbef7115cc4753 ] Make sure to release the sibling interfaces in case controller registration fails to avoid use-after-free and double-free when they are eventually disconnected. This issue was reported by Sashiko while reviewing a fix for a wakeup source leak in the btusb probe errors paths. Link: https://sashiko.dev/#/patchset/20260402092704.2346710-1-johan%40kernel.org Fixes: 9bfa35fe422c ("[Bluetooth] Add SCO support to btusb driver") Fixes: 9d08f50401ac ("Bluetooth: btusb: Add support for Broadcom LM_DIAG interface") Cc: stable@vger.kernel.org # 2.6.27 Reviewed-by: Paul Menzel Signed-off-by: Johan Hovold Signed-off-by: Luiz Augusto von Dentz Stable-dep-of: c5b600a3c05b ("Bluetooth: btusb: fix use-after-free on marvell probe failure") Signed-off-by: Sasha Levin --- drivers/bluetooth/btusb.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 5b5ede26acea83..620dc80992b727 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -4376,12 +4376,21 @@ static int btusb_probe(struct usb_interface *intf, err = hci_register_dev(hdev); if (err < 0) - goto out_free_dev; + goto err_release_siblings; usb_set_intfdata(intf, data); return 0; +err_release_siblings: + if (data->diag) { + usb_set_intfdata(data->diag, NULL); + usb_driver_release_interface(&btusb_driver, data->diag); + } + if (data->isoc) { + usb_set_intfdata(data->isoc, NULL); + usb_driver_release_interface(&btusb_driver, data->isoc); + } out_free_dev: if (data->reset_gpio) gpiod_put(data->reset_gpio); -- 2.53.0