From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 19A80A04DC for ; Mon, 19 Oct 2020 19:34:46 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 8FD2EE31C; Mon, 19 Oct 2020 19:34:38 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by dpdk.org (Postfix) with ESMTP id F1728E270 for ; Mon, 19 Oct 2020 19:34:33 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603128872; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=NiW2m/f1CTqvmm8qiBepfAOdFd9JDRF1XTI1w/ooHZQ=; b=FQ5BueIE4g35DVdgJh0jOnOhOCqiY94o20tOqfBmkr5pt9ecKfnXE+UgaLQg9JvBegXvqc fma/M8KBbSUknmFaytPb7oVVMZdaJvtWPDs1ihfdPda5iVkYpgpvcyp6mDfu9iNVKOuxdW CSDPDt0Vfrkm6IVq7ICHnrbVoqsP1WM= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-219-h12A9hLLN_qfvPWfTHaV7g-1; Mon, 19 Oct 2020 13:34:28 -0400 X-MC-Unique: h12A9hLLN_qfvPWfTHaV7g-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7E9591006C81; Mon, 19 Oct 2020 17:34:27 +0000 (UTC) Received: from localhost.localdomain (unknown [10.36.110.40]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3E4416EF42; Mon, 19 Oct 2020 17:34:26 +0000 (UTC) From: Maxime Coquelin To: dev@dpdk.org, chenbo.xia@intel.com, amorenoz@redhat.com Cc: Maxime Coquelin , stable@dpdk.org Date: Mon, 19 Oct 2020 19:34:10 +0200 Message-Id: <20201019173415.582407-3-maxime.coquelin@redhat.com> In-Reply-To: <20201019173415.582407-1-maxime.coquelin@redhat.com> References: <20201019173415.582407-1-maxime.coquelin@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=maxime.coquelin@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Subject: [dpdk-stable] [PATCH 2/7] vhost: validate index in available entries API X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" This patch validates the queue index parameter, in order to ensure neither out-of-bound accesses nor NULL pointer dereferencing happen. Fixes: a67f286a6596 ("vhost: export queue free entries") Cc: stable@dpdk.org Signed-off-by: Maxime Coquelin --- lib/librte_vhost/vhost.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c index 0c9ba3b3af..193dafc369 100644 --- a/lib/librte_vhost/vhost.c +++ b/lib/librte_vhost/vhost.c @@ -1260,7 +1260,12 @@ rte_vhost_avail_entries(int vid, uint16_t queue_id) if (!dev) return 0; + if (queue_id >= VHOST_MAX_VRING) + return 0; + vq = dev->virtqueue[queue_id]; + if (!vq) + return 0; rte_spinlock_lock(&vq->access_lock); -- 2.26.2