06ec7be557
Restrict /proc/keys such that only those keys to which the current task is granted View permission are presented. The documentation is also updated to reflect these changes. Signed-off-by: Michael LeMay <mdlemay@epoch.ncsc.mil> Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
111 lines
3.5 KiB
Text
111 lines
3.5 KiB
Text
#
|
|
# Security configuration
|
|
#
|
|
|
|
menu "Security options"
|
|
|
|
config KEYS
|
|
bool "Enable access key retention support"
|
|
help
|
|
This option provides support for retaining authentication tokens and
|
|
access keys in the kernel.
|
|
|
|
It also includes provision of methods by which such keys might be
|
|
associated with a process so that network filesystems, encryption
|
|
support and the like can find them.
|
|
|
|
Furthermore, a special type of key is available that acts as keyring:
|
|
a searchable sequence of keys. Each process is equipped with access
|
|
to five standard keyrings: UID-specific, GID-specific, session,
|
|
process and thread.
|
|
|
|
If you are unsure as to whether this is required, answer N.
|
|
|
|
config KEYS_DEBUG_PROC_KEYS
|
|
bool "Enable the /proc/keys file by which keys may be viewed"
|
|
depends on KEYS
|
|
help
|
|
This option turns on support for the /proc/keys file - through which
|
|
can be listed all the keys on the system that are viewable by the
|
|
reading process.
|
|
|
|
The only keys included in the list are those that grant View
|
|
permission to the reading process whether or not it possesses them.
|
|
Note that LSM security checks are still performed, and may further
|
|
filter out keys that the current process is not authorised to view.
|
|
|
|
Only key attributes are listed here; key payloads are not included in
|
|
the resulting table.
|
|
|
|
If you are unsure as to whether this is required, answer N.
|
|
|
|
config SECURITY
|
|
bool "Enable different security models"
|
|
depends on SYSFS
|
|
help
|
|
This allows you to choose different security modules to be
|
|
configured into your kernel.
|
|
|
|
If this option is not selected, the default Linux security
|
|
model will be used.
|
|
|
|
If you are unsure how to answer this question, answer N.
|
|
|
|
config SECURITY_NETWORK
|
|
bool "Socket and Networking Security Hooks"
|
|
depends on SECURITY
|
|
help
|
|
This enables the socket and networking security hooks.
|
|
If enabled, a security module can use these hooks to
|
|
implement socket and networking access controls.
|
|
If you are unsure how to answer this question, answer N.
|
|
|
|
config SECURITY_NETWORK_XFRM
|
|
bool "XFRM (IPSec) Networking Security Hooks"
|
|
depends on XFRM && SECURITY_NETWORK
|
|
help
|
|
This enables the XFRM (IPSec) networking security hooks.
|
|
If enabled, a security module can use these hooks to
|
|
implement per-packet access controls based on labels
|
|
derived from IPSec policy. Non-IPSec communications are
|
|
designated as unlabelled, and only sockets authorized
|
|
to communicate unlabelled data can send without using
|
|
IPSec.
|
|
If you are unsure how to answer this question, answer N.
|
|
|
|
config SECURITY_CAPABILITIES
|
|
tristate "Default Linux Capabilities"
|
|
depends on SECURITY
|
|
help
|
|
This enables the "default" Linux capabilities functionality.
|
|
If you are unsure how to answer this question, answer Y.
|
|
|
|
config SECURITY_ROOTPLUG
|
|
tristate "Root Plug Support"
|
|
depends on USB && SECURITY
|
|
help
|
|
This is a sample LSM module that should only be used as such.
|
|
It prevents any programs running with egid == 0 if a specific
|
|
USB device is not present in the system.
|
|
|
|
See <http://www.linuxjournal.com/article.php?sid=6279> for
|
|
more information about this module.
|
|
|
|
If you are unsure how to answer this question, answer N.
|
|
|
|
config SECURITY_SECLVL
|
|
tristate "BSD Secure Levels"
|
|
depends on SECURITY
|
|
select CRYPTO
|
|
select CRYPTO_SHA1
|
|
help
|
|
Implements BSD Secure Levels as an LSM. See
|
|
<file:Documentation/seclvl.txt> for instructions on how to use this
|
|
module.
|
|
|
|
If you are unsure how to answer this question, answer N.
|
|
|
|
source security/selinux/Kconfig
|
|
|
|
endmenu
|
|
|