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=1793208673; b=QIKifYQC9lRLXt6s9Cg5gnNeIgpesn8C2AdMT3ax3FPAbD32zRIoMRhy9jkqqdlNzLwq KaluqJGauPNXtMbr/SeqjBqCX+9RGlD80PbW98GmSoig+u37H6HHOlSd7ewPmmERMC8Jb oAB4i5a44uc29v77SxRyZdl7urO6wuHMOEyPJFlLN5mfC7q5wPIK3/WeedUb3GZ3Ui63H KRg7KOUJm9xvx/nS7dNDdNuhkFyxZgre60oJdn8Ax/fJUacjuh7B/aqTZaf2ygtOD6VcF Ku43bTEgeVoYKe0+QHcfYWAIEI0vU36aCa3sa9acNmnN95MtdDvG/WyFBNOZVe3lHYg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793208673; 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=OZw1+MJAWg2GuitgpeNaV9z2EbIhaXRiFXlg8kdWxMA=; b=wBJe+X3iHzW/50/PKGKINleG8TjPKHmESv08W1e+IWQhk5aYSc4VbfWHmJ6BzC0Nkkn2 sAT5q8ahOB63uVXIuOI2ey/h4cVdBhqm3vkhg8aa/wDBLvycPLzORKWMSVS61FkRvcej3 u43n6OIA8Zq2I0Hybp/BFuRi7uNBs3+tsaQVIXxrsUnm4+heH44AHV+PnynxvkiEOSyVu VytxACdWkDvObOvALK3RRulEhSAldv/67yfLeILbpzb5rYsSrzT1a2iYefOTv+PhODsYe MuI5GnRzhZMJ8Hy+Nk7QCGfF5wpEpeJmySvHQBS9hPuY0vQ/8RxX+OL0TasPRb9dCMg== 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=NhL58GBl; 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 6D4FF606A31E; Wed, 28 Oct 2026 17:31:13 +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=NhL58GBl Received: by smtp.kernel.org (Postfix) with ESMTPSA id C08841F01825; Wed, 28 Oct 2026 17:31:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793208673; bh=OZw1+MJAWg2GuitgpeNaV9z2EbIhaXRiFXlg8kdWxMA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=NhL58GBlkrri/vFE9sLnz//6KdRybr8vtYbcD3RfNbc4Z7d71GFDWP+cQr2PNZYfm +X6+sMLxF/zuaqlj0uwcuEXxlGgRB1pQneVOL9xvAtjF7GaGD5PPa+n/OLFLJmlD+r vjFUgwQ0LIRL/avhh+Vv/QiAQAfpKA9vuKwQkJKY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Joshua Rogers , Jiri Slaby Subject: [PATCH 5.10 203/516] tty: vcc: zero-initialize control packet in vcc_send_ctl() Date: Wed, 28 Oct 2026 17:55:55 +0100 Message-ID: <20261028170008.311739553@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170003.522232767@linuxfoundation.org> References: <20261028170003.522232767@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 5.10-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 @@ -500,7 +500,7 @@ static ssize_t vcc_sysfs_domain_show(str 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;