From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7C60C4338F for ; Mon, 2 Aug 2021 13:04:41 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 7795760FC1 for ; Mon, 2 Aug 2021 13:04:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7795760FC1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:51642 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mAXcW-0002rq-Gm for qemu-devel@archiver.kernel.org; Mon, 02 Aug 2021 09:04:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:32964) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mAXb7-0000d2-Rb for qemu-devel@nongnu.org; Mon, 02 Aug 2021 09:03:13 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:58827) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mAXb5-0000O9-SK for qemu-devel@nongnu.org; Mon, 02 Aug 2021 09:03:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1627909391; 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; bh=22a1jw9/3KN14HyC13uKjYxuOykekOiOJH/3hUmJfro=; b=M/2Y9MX233LxouGIUJdw9oFToDCcdk6HsF7Nx3STxUDvo5GW6nhpUtJE+myVnwyaJOqHW6 jzzphYSXQVhomCpwKHlDc5wKN0Hp1ZULmPVfKeU/Sp/geqAp1L0u8lyLEbTrqc48X5zp7R Ly1U0ob0T/lwtvns2sg2/RPGfgYhfxo= 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-204-FbxIn_1eMr6dlunqAmN5Pg-1; Mon, 02 Aug 2021 09:03:10 -0400 X-MC-Unique: FbxIn_1eMr6dlunqAmN5Pg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3653787D541 for ; Mon, 2 Aug 2021 13:03:09 +0000 (UTC) Received: from localhost.localdomain.com (unknown [10.39.194.210]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1EF6A2C607; Mon, 2 Aug 2021 13:03:03 +0000 (UTC) From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH 0/5] seccomp: fix hole in blocking forks Date: Mon, 2 Aug 2021 14:02:58 +0100 Message-Id: <20210802130303.3300108-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.701, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Otubo , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Blocking the 'fork' syscall on Linux is not sufficient to block the=0D 'fork' C library function, because the latter is essentially always=0D implemented using the 'clone' syscall these days.=0D =0D Blocking 'clone' is difficult as that also blocks pthread creation,=0D so it needs careful filtering.=0D =0D Daniel P. Berrang=C3=A9 (5):=0D seccomp: allow action to be customized per syscall=0D seccomp: add unit test for seccomp filtering=0D seccomp: fix blocking of process spawning=0D seccomp: block use of clone3 syscall=0D seccomp: block setns, unshare and execveat syscalls=0D =0D MAINTAINERS | 1 +=0D softmmu/qemu-seccomp.c | 282 +++++++++++++++++++++++++++++---------=0D tests/unit/meson.build | 4 +=0D tests/unit/test-seccomp.c | 269 ++++++++++++++++++++++++++++++++++++=0D 4 files changed, 490 insertions(+), 66 deletions(-)=0D create mode 100644 tests/unit/test-seccomp.c=0D =0D --=20=0D 2.31.1=0D =0D