diff options
| author | Micah Morton <mortonm@chromium.org> | 2019-01-16 07:46:06 -0800 |
|---|---|---|
| committer | James Morris <james.morris@microsoft.com> | 2019-01-25 11:22:45 -0800 |
| commit | aeca4e2ca65c1aeacfbe520684e6421719d99417 (patch) | |
| tree | 0497b4bdda5dcd4005293603c1543b9b1a8795a6 /security/safesetid/Kconfig | |
| parent | 40852275a94afb3e836be9248399e036982d1a79 (diff) | |
LSM: add SafeSetID module that gates setid calls
SafeSetID gates the setid family of syscalls to restrict UID/GID
transitions from a given UID/GID to only those approved by a
system-wide whitelist. These restrictions also prohibit the given
UIDs/GIDs from obtaining auxiliary privileges associated with
CAP_SET{U/G}ID, such as allowing a user to set up user namespace UID
mappings. For now, only gating the set*uid family of syscalls is
supported, with support for set*gid coming in a future patch set.
Signed-off-by: Micah Morton <mortonm@chromium.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.morris@microsoft.com>
Diffstat (limited to 'security/safesetid/Kconfig')
| -rw-r--r-- | security/safesetid/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/security/safesetid/Kconfig b/security/safesetid/Kconfig new file mode 100644 index 000000000000..bf89a47ffcc8 --- /dev/null +++ b/security/safesetid/Kconfig @@ -0,0 +1,12 @@ +config SECURITY_SAFESETID + bool "Gate setid transitions to limit CAP_SET{U/G}ID capabilities" + default n + help + SafeSetID is an LSM module that gates the setid family of syscalls to + restrict UID/GID transitions from a given UID/GID to only those + approved by a system-wide whitelist. These restrictions also prohibit + the given UIDs/GIDs from obtaining auxiliary privileges associated + with CAP_SET{U/G}ID, such as allowing a user to set up user namespace + UID mappings. + + If you are unsure how to answer this question, answer N. |