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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2BD8C4332F for ; Mon, 7 Nov 2022 20:58:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233076AbiKGU6L (ORCPT ); Mon, 7 Nov 2022 15:58:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45694 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232936AbiKGU6L (ORCPT ); Mon, 7 Nov 2022 15:58:11 -0500 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AE3E2B61E for ; Mon, 7 Nov 2022 12:58:10 -0800 (PST) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-373582569edso118239977b3.2 for ; Mon, 07 Nov 2022 12:58:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=IAoAra9R2Xqdytgvb5FHE5lvqaFSAU/5jMDpLKBjdb4=; b=NB8+Ew0AYfjmdPJdO0XSLwfeZ+OYwIKA9BIG0WqV9UrxO3UPzg8TrtAk7vX7Fpgouh Rr0mu5WbmN5eVwxYMl0tb6d8HqaeDN5jziODCiHZrIr9GkLq1ikFlFRNaSGPbJrtaSha 97hu4cLAScRvpdzS9lRQ3nMVtwtkOwhNnGz+F5c9kScSKtHJ8UkXaOIOjWXW+/NXl3os Vkk/TDoxm/DmVPBMqFDueVrFsDxqB87yhGLX9L4d/gGZsbHNcLoNaVM6Rzh0c5lZQEFK O1owrltdz5foiqAOjZEUYB8vm97E2wbZMy0EzGX4LIDDSF/FtmUJB7dspANhyP0/E8Aw 7vOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=IAoAra9R2Xqdytgvb5FHE5lvqaFSAU/5jMDpLKBjdb4=; b=MNQ85SYYdYtswVoYy9fvx5JiwZ5hk3HGy2250m25PhbNcUZKrd7P7lbcEIDKAMyVmv LODYopuOD2jqusHJEjLrW/nfg5qG50BLGetdbU+xgUxCVHKKhAgnWXUJf1A2L1I652AP KgDCWdC8o3DrfVSGKfODB7ZNRCSfdmp65BgophGgHKJm8besJKcV8h2KCrhQBgvGVPcb lBuuM3w+fcxkcIdmVJy39/qGxcP17oyGj0vnYENfJ+vVSqbl9hKwITYtMFZRyZsVWcdt 9zRVOGCvB7pn71v6gGDvT20fHI7eeHYv91lPT5aQpl6WlsKCejLQm1fvwZ/kHbJj8ASF ys5w== X-Gm-Message-State: ACrzQf0MsUqD9Q33BkN5mLCaVesdJXSkkhKTtaObpEzdlEhWFdV5WYj5 hhp4uJD18ctY35Pit2DMBvHZyBERfg== X-Google-Smtp-Source: AMsMyM7xHXCGj+7pqy5ZViDJCt7bvm3vyqjC4LS848X+8b6/op7HR4kC3hHLFiKF1yGjPQJpZbwBHpjO4A== X-Received: from cukie91.nyc.corp.google.com ([2620:0:1003:314:8113:36e9:8e90:5fb8]) (user=cukie job=sendgmr) by 2002:a0d:c481:0:b0:35b:cbe2:d66a with SMTP id g123-20020a0dc481000000b0035bcbe2d66amr833796ywd.125.1667854689567; Mon, 07 Nov 2022 12:58:09 -0800 (PST) Date: Mon, 7 Nov 2022 15:57:51 -0500 Mime-Version: 1.0 X-Mailer: git-send-email 2.38.1.431.g37b22c650d-goog Message-ID: <20221107205754.2635439-1-cukie@google.com> Subject: [PATCH v1 0/2] Add LSM access controls for io_uring_setup From: Gil Cukierman To: Jens Axboe , Pavel Begunkov , Paul Moore , James Morris , "Serge E. Hallyn" , Stephen Smalley , Eric Paris Cc: Gil Cukierman , kernel-team@android.com, linux-kernel@vger.kernel.org, io-uring@vger.kernel.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org This patchset provides the changes required for controlling access to the io_uring_setup system call by LSMs. It does this by adding a new hook to io_uring. It also provides the SELinux implementation for a new permission, io_uring { setup }, using the new hook. This is important because existing io_uring hooks only support limiting the sharing of credentials and access to the sensitive uring_cmd file op. Users of LSMs may also want the ability to tightly control which callers can retrieve an io_uring capable fd from the kernel, which is needed for all subsequent io_uring operations. This was tested by running the liburing test suite on a kernel containing these patches. Gil Cukierman (2): lsm,io_uring: add LSM hook for io_uring_setup selinux: add support for the io_uring setup permission include/linux/lsm_hook_defs.h | 1 + include/linux/lsm_hooks.h | 3 +++ include/linux/security.h | 5 +++++ io_uring/io_uring.c | 5 +++++ security/security.c | 4 ++++ security/selinux/hooks.c | 13 +++++++++++++ security/selinux/include/classmap.h | 2 +- 7 files changed, 32 insertions(+), 1 deletion(-) -- 2.38.0.135.g90850a2211-goog