From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793212834; b=x2lquwH/ckU3vOJJvGejiKey+lZq4k/M2tkCaQsPE6OSKkeDPZZZBITokFZAQQfwLJP1 vUJQHst71F8UvnAUvYLajum4lEaj67N2mThIaTvRXGm5Y4MfQsbhdxWkbVQWKxpzupZ/Z 1fz534dVdjGsy3x0LF8jBIzvGh+gLUJcisiybQPmVpCUYXLJDpiYe/3dScQuIhsmZonFN uTxV87trbzhABON39yCiZdjB2nH6qffbNBgHaf51JB6p0BH1G2XBFaHJLtAzm8x72qjpt 4DxuzfPJ1Kf9bGnRH75xdZSfe7zM1L8OqOAe3fCmfNP+uj9d/oh1MGrLqAVAidVPu/g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793212834; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=rDXDERcFHU5XqMc6j7+NXY6c3HqTRhv7Br2uDFveOYI=; b=if4wHn3/OYrcI9HuKOh2iEMI0Fv0pNcZ34aLU+aSqvOjjkRiuV59khFdTGuD/b1LgLM1 IvCzfy58JfbBd+17VC1z/UbiT6xKieeHAPGvBlUO/oQ7Qhr/j2LI1jWhWocz9QTPE9Gja T9X1TMOYpmuFhm+cR/SmuEbHox3DBXS572fQUsexxFGzzDE1Bg+XTUmz5dSwRqEyHbQRD 6+cT8YjU/ihJeuIV/PQL9q2pPs9LrJoAnwgxI6iJyBk4OYGCy6g/LMz0FLWqd+0rfDFee B4lQbayYRZW6WGh4EbFJsO4uBzIbRd7+WkuMoLnzchipY1AfZQDKKjbr8Q2E9T45Jkw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=Gom2y4De; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 729C7606A31A; Wed, 28 Oct 2026 18:40:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=Gom2y4De Received: by smtp.kernel.org (Postfix) with ESMTPSA id C360E1F01825; Wed, 28 Oct 2026 18:40:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793212834; bh=rDXDERcFHU5XqMc6j7+NXY6c3HqTRhv7Br2uDFveOYI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Gom2y4DelRjcA5kteis8bUcnz1jRJc0Yz2QsvMZdPaaWEDguRw8OsRwKa7IhHhsH0 nxM+6Bx1s0lbNyjcAaXGHa13fBojjcsIL/QI1r3d92db3AJ9pxm0aumhWE8AEHCluH O3CVHrpSkjNY+VsucRa23g/9oX5U70sbdtxnUrzg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Joshua Rogers , Jiri Slaby Subject: [PATCH 6.1 0291/1887] tty: vcc: zero-initialize control packet in vcc_send_ctl() Date: Wed, 28 Oct 2026 17:39:47 +0100 Message-ID: <20261028170505.851722192@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170459.200466217@linuxfoundation.org> References: <20261028170459.200466217@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Joshua Rogers commit 1f71f565e3585da1098ff19ca3c24687dab59185 upstream. The stack-allocated struct vio_vcc pkt was partially initialized, leaving the tag.stype_env field uninitialized before being sent via ldc_write(), potentially leaking kernel stack data to the LDC peer. Assisted-by: AISLE:Snapshot Cc: stable Signed-off-by: Joshua Rogers Reviewed-by: Jiri Slaby Link: https://patch.msgid.link/20260803-aisle-tty-vcc-v2-1-a50bc9b15193@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman --- drivers/tty/vcc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/tty/vcc.c +++ b/drivers/tty/vcc.c @@ -492,7 +492,7 @@ static ssize_t domain_show(struct device static int vcc_send_ctl(struct vcc_port *port, int ctl) { - struct vio_vcc pkt; + struct vio_vcc pkt = {}; int rv; pkt.tag.type = VIO_TYPE_CTRL;