From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 489D629ACC5; Mon, 23 Mar 2026 16:16:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774282577; cv=none; b=MLrb4jSbmaV1B6CUsrri4O5074TonstEWxah7NUSlJhuix9qV3/ej45NSSrJ8XsDLOwnWq9rreF72Cfbqvk9BtyrZE8ylidvxGQd48f7JinVq86sc5oWp4K2JaJcXMXrM1w6iy4eQDWJCsO0fnq3+iPMPv8xNCwimrc8XTLBwuU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774282577; c=relaxed/simple; bh=IFxg8ReTWk7OoGNDv9dKvHN5ErnRTNjfFptt9PnyS1M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZZVI0SzbbadcQMEplxDwb6I4wNTsvJZkWCt4PmcLL6z6qOcMM1w3ZvPMYpzIj3W6z+k982Qmrc44bNL09F0ez7HtQbGU7TP6BV7xx/rsbuJF6ZtmgAw5aU1OtSGUPgv3QTHBYs1WOUhnj8T+4c4/kvkQ+3edqf3iVqtTyf+dlEg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=kh86JeUY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="kh86JeUY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD281C4CEF7; Mon, 23 Mar 2026 16:16:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774282577; bh=IFxg8ReTWk7OoGNDv9dKvHN5ErnRTNjfFptt9PnyS1M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kh86JeUYa4G1dJQS6ECiTOMj7ow+Axq5M/dk2f6BwkUMcCHbQmDTid9Xa9w2tLgsa u5a3Gie3namVGXDRAGeQ0yPzhjcvnEJihD8S2zKbTL+uDCmlwJJtm4CM7NHpHH5Lsr HGTFcESITRIYHhlkgp6AqfMemRVZbzAAcUbf2Qos= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Oliver Neukum Subject: [PATCH 6.1 208/481] usb: yurex: fix race in probe Date: Mon, 23 Mar 2026 14:43:10 +0100 Message-ID: <20260323134530.237086250@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134525.256603107@linuxfoundation.org> References: <20260323134525.256603107@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Oliver Neukum commit 7a875c09899ba0404844abfd8f0d54cdc481c151 upstream. The bbu member of the descriptor must be set to the value standing for uninitialized values before the URB whose completion handler sets bbu is submitted. Otherwise there is a window during which probing can overwrite already retrieved data. Cc: stable Signed-off-by: Oliver Neukum Link: https://patch.msgid.link/20260209143720.1507500-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/yurex.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -272,6 +272,7 @@ static int yurex_probe(struct usb_interf dev->int_buffer, YUREX_BUF_SIZE, yurex_interrupt, dev, 1); dev->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + dev->bbu = -1; if (usb_submit_urb(dev->urb, GFP_KERNEL)) { retval = -EIO; dev_err(&interface->dev, "Could not submitting URB\n"); @@ -280,7 +281,6 @@ static int yurex_probe(struct usb_interf /* save our data pointer in this interface device */ usb_set_intfdata(interface, dev); - dev->bbu = -1; /* we can register the device now, as it is ready */ retval = usb_register_dev(interface, &yurex_class);