From: Randy Dunlap <rdunlap@infradead.org>
To: Salvatore Mesoraca <s.mesoraca16@gmail.com>,
linux-kernel@vger.kernel.org
Cc: kernel-hardening@lists.openwall.com, linux-mm@kvack.org,
linux-security-module@vger.kernel.org,
Alexander Viro <viro@zeniv.linux.org.uk>,
Brad Spengler <spender@grsecurity.net>,
Casey Schaufler <casey@schaufler-ca.com>,
Christoph Hellwig <hch@infradead.org>,
James Morris <james.l.morris@oracle.com>,
Jann Horn <jannh@google.com>, Kees Cook <keescook@chromium.org>,
PaX Team <pageexec@freemail.hu>,
"Serge E. Hallyn" <serge@hallyn.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v5 08/12] S.A.R.A.: trampoline emulation
Date: Sat, 6 Jul 2019 08:31:58 -0700 [thread overview]
Message-ID: <28431b5d-c34c-a54b-acbf-70d1ae635e0d@infradead.org> (raw)
In-Reply-To: <1562410493-8661-9-git-send-email-s.mesoraca16@gmail.com>
On 7/6/19 3:54 AM, Salvatore Mesoraca wrote:
> diff --git a/security/sara/Kconfig b/security/sara/Kconfig
> index 54a96e0..458e0e8 100644
> --- a/security/sara/Kconfig
> +++ b/security/sara/Kconfig
> @@ -117,6 +117,24 @@ choice
> Documentation/admin-guide/LSM/SARA.rst.
> endchoice
>
> +config SECURITY_SARA_WXPROT_EMUTRAMP
> + bool "Enable emulation for some types of trampolines"
> + depends on SECURITY_SARA_WXPROT
> + depends on ARCH_HAS_LSM_PAGEFAULT
> + depends on X86
> + default y
> + help
> + Some programs and libraries need to execute special small code
> + snippets from non-executable memory pages.
> + Most notable examples are the GCC and libffi trampolines.
> + This features make it possible to execute those trampolines even
This feature makes it possible
> + if they reside in non-executable memory pages.
> + This features need to be enabled on a per-executable basis
This feature needs to be
> + via user-space utilities.
> + See Documentation/admin-guide/LSM/SARA.rst. for further information.
> +
> + If unsure, answer y.
> +
> config SECURITY_SARA_WXPROT_DISABLED
> bool "WX protection will be disabled at boot."
> depends on SECURITY_SARA_WXPROT
--
~Randy
next prev parent reply other threads:[~2019-07-06 15:32 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-06 10:54 [PATCH v5 00/12] S.A.R.A. a new stacked LSM Salvatore Mesoraca
2019-07-06 10:54 ` [PATCH v5 01/12] S.A.R.A.: add documentation Salvatore Mesoraca
2019-07-06 17:14 ` Randy Dunlap
2019-07-06 17:32 ` Salvatore Mesoraca
2019-07-13 0:14 ` James Morris
2019-07-06 10:54 ` [PATCH v5 02/12] S.A.R.A.: create framework Salvatore Mesoraca
2019-07-06 15:29 ` Randy Dunlap
2019-07-06 10:54 ` [PATCH v5 03/12] S.A.R.A.: cred blob management Salvatore Mesoraca
2019-07-12 23:35 ` James Morris
2019-07-06 10:54 ` [PATCH v5 04/12] S.A.R.A.: generic DFA for string matching Salvatore Mesoraca
2019-07-06 18:32 ` Jann Horn
2019-07-07 16:01 ` Salvatore Mesoraca
2019-07-08 17:37 ` Jann Horn
2019-10-06 16:49 ` Salvatore Mesoraca
2019-10-07 12:40 ` Jann Horn
2019-07-06 10:54 ` [PATCH v5 05/12] LSM: creation of "check_vmflags" LSM hook Salvatore Mesoraca
2019-07-06 10:54 ` [PATCH v5 07/12] LSM: creation of "pagefault_handler" " Salvatore Mesoraca
2019-07-06 10:54 ` [PATCH v5 08/12] S.A.R.A.: trampoline emulation Salvatore Mesoraca
2019-07-06 15:31 ` Randy Dunlap [this message]
2019-07-06 10:54 ` [PATCH v5 09/12] S.A.R.A.: WX protection procattr interface Salvatore Mesoraca
2019-07-06 10:54 ` [PATCH v5 10/12] S.A.R.A.: XATTRs support Salvatore Mesoraca
2019-07-06 10:54 ` [PATCH v5 11/12] S.A.R.A.: /proc/*/mem write limitation Salvatore Mesoraca
2019-07-06 18:20 ` Jann Horn
2019-07-07 16:15 ` Salvatore Mesoraca
2019-07-06 10:54 ` [PATCH v5 12/12] MAINTAINERS: take maintainership for S.A.R.A Salvatore Mesoraca
2019-07-06 14:33 ` [PATCH v5 00/12] S.A.R.A. a new stacked LSM Jordan Glover
2019-07-06 15:02 ` Salvatore Mesoraca
2019-07-07 1:16 ` James Morris
2019-07-07 15:40 ` Salvatore Mesoraca
[not found] ` <1562410493-8661-7-git-send-email-s.mesoraca16@gmail.com>
2019-07-06 15:38 ` [PATCH v5 06/12] S.A.R.A.: WX protection Randy Dunlap
[not found] ` <20190706192852.GO17978@ZenIV.linux.org.uk>
2019-07-07 15:49 ` Salvatore Mesoraca
2019-07-09 4:51 ` Kees Cook
2019-07-08 12:42 ` David Laight
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