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 631BA4FDE60; Tue, 13 Oct 2026 12:38:22 +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=1791895103; cv=none; b=FO5YJYk6ze0M6fWs8sHlrOgWYsl5Jri9feOrnItlqZAqQEHTgNtcdRDfhJnBgioTwabx7oNeJiWK9KpVnH9hrF6X41B2m+ZilrVYCYfCPUyQ6Un254RUA6MWuZqb/Q2jUiGI8CuTyjllKgcPgsjKB2qMqzVbWoC0Jtlrfjmk3bk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791895103; c=relaxed/simple; bh=G3nFXOQpLrMyeRXi1xJ16oKB/PA+AWScizQxtP+qUvc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=e1nhH3zcaLBr6LULRUFIP9kH2u2G9uww01Pntr74wT+Bimy25zZX77iJupDZ/KR5QvnFvgFFYAS542kb9SAFsseco8nVydpELqC4IMk19FGvFDYwZSr/ARSi2F2QqVU88nKUvUgX4+WFh2KNBgesggokMxduow4iqdKD/9Sp5fc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=fYNKIo/n; 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="fYNKIo/n" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B961B1F000FF; Tue, 13 Oct 2026 12:38:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1791895102; bh=+qMuwoygSVbZKZREKeisca0XluJHD9XDcPDmEpcy1VA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=fYNKIo/nPvLxCr6NJQl7X7oEtmSfhhyu5ohZduXx46EYF4f8nj6JaUUjxFZjLhreS aQf2qwXLqCfEs4qg8PnoyLTZc+np1loxCoXDTh0vrDj19ZFXEPZ9pGsAYGpy1mObbW rfFkxEgYJFCq279HwQVEElmgAaK0Bss0E2r7p79U= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Joshua Rogers , Jiri Slaby Subject: [PATCH 6.12 161/497] tty: vcc: zero-initialize control packet in vcc_send_ctl() Date: Tue, 13 Oct 2026 13:35:28 +0200 Message-ID: <20261013112911.711000888@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261013112907.864180619@linuxfoundation.org> References: <20261013112907.864180619@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 6.12-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;