Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1596234
| Path | csiph.com!aioe.org!bofh.it!news.nic.it!robomod |
|---|---|
| From | Tycho Andersen <tycho@docker.com> |
| Newsgroups | linux.kernel |
| Subject | [PATCH] security/Kconfig: further restrict HARDENED_USERCOPY |
| Date | Thu, 09 Mar 2017 18:40:01 +0100 |
| Message-ID | <tjacF-8oc-1@gated-at.bofh.it> (permalink) |
| Dkim-Signature | v=1; a=rsa-sha256; c=relaxed/relaxed; d=docker.com; s=google; h=from:to:cc:subject:date:message-id; bh=9werAetMQniXWGLiYHo63FUVDdaSl63mIovTHvqudBc=; b=FWMb/viCwHg0pdlP1cn3KGROk77Gp+FWpl1d5wKGye3mp5FLoi6qwK3HYCX3bvwRum fujR6pvw5gOK3L8kOD88ymqW35O0vOkCO3D/PhPfF5L1fpnJ7byfUlLvIvjoIUNKX9xK G2aPu4yIBmC62xAlogquIxD3xG1kV1moh2hhE= |
| X-Google-Dkim-Signature | v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=9werAetMQniXWGLiYHo63FUVDdaSl63mIovTHvqudBc=; b=TovfVJHVxreb2mQGyEwrKmKvWnHgkctqv6+dlGuevUl6wykjQkho0fzVupOtHwfPa8 fhvfn0U+3ydRx4W0GQKefVWmzy2ptjwxcFGhkz2L1wBSLjIEh9is1c9RmkZDvWRgXDIn 6BYuvF6CP0uOXSTb/T15Volj2FUqCV+4+ihFj/H8UKPla3iJBEy104tde2xoIifpjjUu tF09EpbnbqODSrEcKIwM8WOZ1MdyFvG+86lMOyEU0aPXfL23IgSTCiFqGT7BfJ7PW4aC sz44C4pscwzInwF9gwWtrrz634AJVC/L8wRLgb/XaSj9bC/TiCWroGsSnVZ5OuQZyLSq Tj7Q== |
| X-Gm-Message-State | AMke39kYrlnJ7bsvGQm+9kK8Rhaj9X44lBi/Hfxy5bFBDWkq2g+TiLWSpIoEpOMrDelczgCF |
| X-Received | by 10.99.199.69 with SMTP id v5mr15016882pgg.90.1489080600315; Thu, 09 Mar 2017 09:30:00 -0800 (PST) |
| X-Mailer | git-send-email 2.7.4 |
| Sender | robomod@news.nic.it |
| List-ID | <linux-kernel.vger.kernel.org> |
| X-Mailing-List | linux-kernel@vger.kernel.org |
| Approved | robomod@news.nic.it |
| Lines | 28 |
| Organization | linux.* mail to news gateway |
| X-Original-Cc | linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Tycho Andersen <tycho@docker.com>, "Serge E. Hallyn" <serge@hallyn.com> |
| X-Original-Date | Thu, 9 Mar 2017 09:29:21 -0800 |
| X-Original-Message-ID | <1489080561-30786-1-git-send-email-tycho@docker.com> |
| X-Original-Sender | linux-kernel-owner@vger.kernel.org |
| Xref | csiph.com linux.kernel:1596234 |
Show key headers only | View raw
It doesn't make sense to have HARDENED_USERCOPY when either /dev/kmem is enabled or /dev/mem can be used to read kernel memory. v2: add !MMU depend as well Signed-off-by: Tycho Andersen <tycho@docker.com> CC: Kees Cook <keescook@chromium.org> CC: "Serge E. Hallyn" <serge@hallyn.com> CC: James Morris <james.l.morris@oracle.com> --- security/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/security/Kconfig b/security/Kconfig index 3ff1bf9..aeabd40 100644 --- a/security/Kconfig +++ b/security/Kconfig @@ -142,6 +142,8 @@ config HARDENED_USERCOPY bool "Harden memory copies between kernel and userspace" depends on HAVE_ARCH_HARDENED_USERCOPY depends on HAVE_HARDENED_USERCOPY_ALLOCATOR + depends on !DEVKMEM + depends on !ARCH_HAS_DEVMEM_IS_ALLOWED || STRICT_DEVMEM || !MMU select BUG help This option checks for obviously wrong memory regions when -- 2.7.4
Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread
[PATCH] security/Kconfig: further restrict HARDENED_USERCOPY Tycho Andersen <tycho@docker.com> - 2017-03-09 18:40 +0100 Re: [PATCH] security/Kconfig: further restrict HARDENED_USERCOPY Kees Cook <keescook@chromium.org> - 2017-03-09 20:20 +0100
csiph-web