From patchwork Tue Oct 22 14:29:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dehan Meng X-Patchwork-Id: 13845745 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5C883D2C55E for ; Tue, 22 Oct 2024 14:30:55 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t3Fty-0001Xb-AQ; Tue, 22 Oct 2024 10:30:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t3Fti-0001Om-FA for qemu-devel@nongnu.org; Tue, 22 Oct 2024 10:30:12 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t3Ftg-0007EN-O8 for qemu-devel@nongnu.org; Tue, 22 Oct 2024 10:30:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1729607407; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=34PkQkzS2fJKjA97jCvEOEfq09+BKhcwhQ4YHpj/pVU=; b=eUwHvAruEZxZPg2OszD6TE8IGE4XZ6/EQ/UnrrUf69qaSejNKPqPkQVtBFjLeeir5W3iG+ 0VnbAsBy9TeHn0WKAJmwC/bCigB38s8mc+J00snNbHXlT4jCiEkPGPZgpvzsyfIOFZCAzO Nshzwy909doX55x3jnOSLkts9Wx6GKc= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-642-OM0OjuzlPReio9LBApKOhQ-1; Tue, 22 Oct 2024 10:30:04 -0400 X-MC-Unique: OM0OjuzlPReio9LBApKOhQ-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9788F19560BE; Tue, 22 Oct 2024 14:30:03 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.72.116.80]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id B3B001955E84; Tue, 22 Oct 2024 14:29:59 +0000 (UTC) From: Dehan Meng To: qemu-devel@nongnu.org Cc: demeng@redhat.com, kkostiuk@redhat.com, michael.roth@amd.com, peter.maydell@linaro.org, berrange@redhat.com Subject: [PATCH v4 1/5] qemu-ga: 'Null' check for mandatory parameters Date: Tue, 22 Oct 2024 22:29:44 +0800 Message-Id: <20241022142948.531325-2-demeng@redhat.com> In-Reply-To: <20241022142948.531325-1-demeng@redhat.com> References: <20241022142948.531325-1-demeng@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Received-SPF: pass client-ip=170.10.133.124; envelope-from=demeng@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.519, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org sscanf return values are checked and add 'Null' check for mandatory parameters. Signed-off-by: Dehan Meng --- qga/commands-linux.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/qga/commands-linux.c b/qga/commands-linux.c index 51d5e3d927..f0e9cdd27c 100644 --- a/qga/commands-linux.c +++ b/qga/commands-linux.c @@ -2103,7 +2103,9 @@ static char *hexToIPAddress(const void *hexValue, int is_ipv6) int i; for (i = 0; i < 16; i++) { - sscanf(&hexStr[i * 2], "%02hhx", &in6.s6_addr[i]); + if (sscanf(&hex_str[i * 2], "%02hhx", &in6.s6_addr[i]) != 1) { + return NULL; + } } inet_ntop(AF_INET6, &in6, addr, INET6_ADDRSTRLEN); @@ -2164,6 +2166,10 @@ GuestNetworkRouteList *qmp_guest_network_get_route(Error **errp) networkroute = route; networkroute->iface = g_strdup(Iface); networkroute->destination = hexToIPAddress(Destination, 1); + if (networkroute->destination == NULL) { + g_free(route); + continue; + } networkroute->metric = Metric; networkroute->source = hexToIPAddress(Source, 1); networkroute->desprefixlen = g_strdup_printf( @@ -2195,6 +2201,10 @@ GuestNetworkRouteList *qmp_guest_network_get_route(Error **errp) networkroute = route; networkroute->iface = g_strdup(Iface); networkroute->destination = hexToIPAddress(&Destination, 0); + if (networkroute->destination == NULL) { + g_free(route); + continue; + } networkroute->gateway = hexToIPAddress(&Gateway, 0); networkroute->mask = hexToIPAddress(&Mask, 0); networkroute->metric = Metric;