From patchwork Fri Jul 15 21:44:23 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 9232797 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A648560865 for ; Fri, 15 Jul 2016 21:45:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9912B26D08 for ; Fri, 15 Jul 2016 21:45:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8C62A27BF9; Fri, 15 Jul 2016 21:45:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.wl.linuxfoundation.org (Postfix) with SMTP id 9EFE526D08 for ; Fri, 15 Jul 2016 21:45:47 +0000 (UTC) Received: (qmail 17900 invoked by uid 550); 15 Jul 2016 21:44:52 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: kernel-hardening@lists.openwall.com Delivered-To: mailing list kernel-hardening@lists.openwall.com Received: (qmail 17729 invoked from network); 15 Jul 2016 21:44:48 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=iXx//qSV5GUyDsDz5gFTndX/uYBQ8OgROByi4RwfXtY=; b=ohTR354RuaBZcNOodItIkKPTjnQx9HFFZTvrBcLbfaOM3Glfl91Mw/xtuYd8yXrZfs G8+xv851yfAemsFLFzMQQtPg+IuTAR5QdZg09/jU70e+GhUZgv/F3bdrG/8CGVvTLnU3 2hXIL9gm1uqcEvjcyM+Gd07/bW97nUX3pgss0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=iXx//qSV5GUyDsDz5gFTndX/uYBQ8OgROByi4RwfXtY=; b=VCaR2BWIm010Bhnd6AC5TzI79xTiBvHU/bJOvc/BsihsnqJJGgIbOP2D8+FbrcnX0b TVqNmkaRKgE/YMxpzqXm4pzL9qbBYtX167pQ+nvEFjk1q9QUG8/HLMKZGg7166qt5MB+ +6Ceafod6B8D0n4OCZIYzkQlisoqIz7nXperLMaWUOLBSsKtA9ru1DVjxg7NRXfgJHmw +v3RK2I76Fv8g0MgTH6U6ngqoMyGAgjUoa9jrfxEhbJv/LOz3ap1na7C0nTyvKYvHMPD BFNT8WTTK/s7O0k7yxdI6+5MZHLrsC1ePMp/XdFRI9MpKmgdsSAt8PMKfhUgGV6GJ9x2 mlYg== X-Gm-Message-State: ALyK8tKP4Z4QaveGEt7eiovBPZmtM4uvyO7HF0b/WIb0YBGYvloFfqx9Ahmk2Gn/CuDJxn2l X-Received: by 10.66.73.166 with SMTP id m6mr17343582pav.122.1468619076311; Fri, 15 Jul 2016 14:44:36 -0700 (PDT) From: Kees Cook To: linux-kernel@vger.kernel.org Cc: Kees Cook , Balbir Singh , Daniel Micay , Josh Poimboeuf , Rik van Riel , Casey Schaufler , PaX Team , Brad Spengler , Russell King , Catalin Marinas , Will Deacon , Ard Biesheuvel , Benjamin Herrenschmidt , Michael Ellerman , Tony Luck , Fenghua Yu , "David S. Miller" , x86@kernel.org, Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Andy Lutomirski , Borislav Petkov , Mathias Krause , Jan Kara , Vitaly Wool , Andrea Arcangeli , Dmitry Vyukov , Laura Abbott , linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, kernel-hardening@lists.openwall.com Date: Fri, 15 Jul 2016 14:44:23 -0700 Message-Id: <1468619065-3222-10-git-send-email-keescook@chromium.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1468619065-3222-1-git-send-email-keescook@chromium.org> References: <1468619065-3222-1-git-send-email-keescook@chromium.org> Subject: [kernel-hardening] [PATCH v3 09/11] s390/uaccess: Enable hardened usercopy X-Virus-Scanned: ClamAV using ClamSMTP Enables CONFIG_HARDENED_USERCOPY checks on s390. Signed-off-by: Kees Cook --- arch/s390/Kconfig | 1 + arch/s390/lib/uaccess.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index a8c259059adf..9f694311c9ed 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -122,6 +122,7 @@ config S390 select HAVE_ALIGNED_STRUCT_PAGE if SLUB select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_EARLY_PFN_TO_NID + select HAVE_ARCH_HARDENED_USERCOPY select HAVE_ARCH_JUMP_LABEL select CPU_NO_EFFICIENT_FFS if !HAVE_MARCH_Z9_109_FEATURES select HAVE_ARCH_SECCOMP_FILTER diff --git a/arch/s390/lib/uaccess.c b/arch/s390/lib/uaccess.c index ae4de559e3a0..6986c20166f0 100644 --- a/arch/s390/lib/uaccess.c +++ b/arch/s390/lib/uaccess.c @@ -104,6 +104,7 @@ static inline unsigned long copy_from_user_mvcp(void *x, const void __user *ptr, unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n) { + check_object_size(to, n, false); if (static_branch_likely(&have_mvcos)) return copy_from_user_mvcos(to, from, n); return copy_from_user_mvcp(to, from, n); @@ -177,6 +178,7 @@ static inline unsigned long copy_to_user_mvcs(void __user *ptr, const void *x, unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n) { + check_object_size(from, n, true); if (static_branch_likely(&have_mvcos)) return copy_to_user_mvcos(to, from, n); return copy_to_user_mvcs(to, from, n);