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 5049C2F8BC3; Mon, 13 Apr 2026 16:23:55 +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=1776097435; cv=none; b=c4UR9ghMeq4EoNButKysPOIG+ihv4h7sia697KMNc1LbCmHuX7wnSAs8zQ+JFu5uuzoIFb00ggnystiKdJHGNk8cIK0orSpxduK6Y19C1fsCqluaDAC2/0tgYSKCFTGvv/KXFfhAjkCXAytfEcuWTmZv3B0E7cOuN+nysGzDqko= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776097435; c=relaxed/simple; bh=7C+eggGTjp9V6gpvG0IrwF1fifvDzsbWzRQ0pLeo7Rk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KGOCD/dsPCppTWEFekm2x0f8CHECGIllor7xP2cLebzUwIMYVTVHoiuGjavQljqEKNMKaEc15mF7tYKEB6SUB4fY6tlzFZMJQuP6yYi0f0ickS1u7Cc7S5Dd+ZxsZQLZspt6bNpLeYozIM+vYgQw1hvYgHnQDtlhpXrsO42Mr88= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=vL8L/aNB; 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="vL8L/aNB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA328C2BCB0; Mon, 13 Apr 2026 16:23:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1776097435; bh=7C+eggGTjp9V6gpvG0IrwF1fifvDzsbWzRQ0pLeo7Rk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vL8L/aNBFKknBMa88ibBk9UHMKXV+mNr+DEyGOoKT5tu4mVjrQ5qbl01XPMaEeuIr 2olFWJr+4eS48pCrf3+5KDhguVT3tx13+Cp0Vzsm9/pvO08rsIAAL23Nw0zYR9EQxa 55XWl9ZZb56xEcKze29un4JZydJM+i7oxoY+x35Y= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Oliver Neukum Subject: [PATCH 5.15 136/570] usb: yurex: fix race in probe Date: Mon, 13 Apr 2026 17:54:27 +0200 Message-ID: <20260413155835.537523715@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260413155830.386096114@linuxfoundation.org> References: <20260413155830.386096114@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 5.15-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);