From patchwork Mon Oct 21 13:28:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dehan Meng X-Patchwork-Id: 1999950 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=N2/sWXtY; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XXGPb2H2Jz1xvp for ; Tue, 22 Oct 2024 00:29:39 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t2sTD-00069y-8K; Mon, 21 Oct 2024 09:29:15 -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 1t2sT3-000691-VU for qemu-devel@nongnu.org; Mon, 21 Oct 2024 09:29:07 -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 1t2sSz-0000dZ-8G for qemu-devel@nongnu.org; Mon, 21 Oct 2024 09:29:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1729517338; 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=dFJX0RXBRI609Uw2UE3rlCY7D25DaDb/nXWwGlBpCt0=; b=N2/sWXtYe1FTmnS9Ueb8KWp8a5vmTV9tZhRU50P0WGj5VtYz8Xtu0DcyE+KuleqK8ENoDr JUEd4FzvW6Dy1dTZaQUCkKQ+8mlPVgTJ6DfSAgYDJk/qC53EdzA237rm/2bdzrudbG3Fy3 JuJtoU8yIOKcOw0O5fb0FvuH4C4R+/U= Received: from mx-prod-mc-02.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-412-MQmh2p6ROGiRiYRBQWuaaw-1; Mon, 21 Oct 2024 09:28:57 -0400 X-MC-Unique: MQmh2p6ROGiRiYRBQWuaaw-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-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id F22751955EE6; Mon, 21 Oct 2024 13:28:55 +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 3667119560AA; Mon, 21 Oct 2024 13:28:51 +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 v2 1/4] sscanf return values are checked to ensure correct parsing. Date: Mon, 21 Oct 2024 21:28:31 +0800 Message-Id: <20241021132839.463255-2-demeng@redhat.com> In-Reply-To: <20241021132839.463255-1-demeng@redhat.com> References: <20241021132839.463255-1-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: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.421, 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_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Dehan Meng --- qga/commands-linux.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/qga/commands-linux.c b/qga/commands-linux.c index 51d5e3d927..2c2b5f4ff2 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);