linux-kernel - Re: [PATCH 2/6] file capabilities: remove CONFIG_SECURITY_FILE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 26 Sep 2008 21:25:35 -0700
From:	"Andrew G. Morgan" <morgan@...nel.org>
To:	"Serge E. Hallyn" <serue@...ibm.com>
CC:	linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org
Subject: Re: [PATCH 2/6] file capabilities: remove CONFIG_SECURITY_FILE_CAPABILITIES

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Serge E. Hallyn wrote:
> From: Serge Hallyn <serue@...ibm.com>
> 
> Remove the option to compile the kernel without file capabilities.  Not
> compiling file capabilities actually makes the kernel less safe, as it
> includes the possibility for a task changing another task's capabilities.
> 
> Some are concerned that userspace tools (and user education) are not
> up to the task of properly configuring file capabilities on a system.
> For those cases, there is now the ability to boot with the no_file_caps
> boot option.  This will prevent file capabilities from being used in
> the capabilities recalculation at exec, but will not change the rest
> of the kernel behavior which used to be switchable using the
> CONFIG_SECURITY_FILE_CAPABILITIES option.
> 
> Signed-off-by: Serge Hallyn <serue@...ibm.com>

Acked-by: Andrew G. Morgan <morgan@...nel.org>

> ---
>  fs/open.c                  |    8 --
>  include/linux/capability.h |    2 -
>  include/linux/init_task.h  |    4 -
>  kernel/capability.c        |  158 --------------------------------------------
>  security/Kconfig           |    9 ---
>  security/commoncap.c       |   53 ---------------
>  6 files changed, 0 insertions(+), 234 deletions(-)
> 
> diff --git a/fs/open.c b/fs/open.c
> index 07da935..6e1cd6e 100644
[...snip...]

Cheers

Andrew
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (Darwin)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFI3bW9+bHCR3gb8jsRAoD6AKCdF8HNGdT8MPqWUBqrf8+BXGEyZwCfZc2T
+/hD1+FB2fTLae+vEbKpWX0=
=NerD
-----END PGP SIGNATURE-----
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/