On Fri, 11 Jan 2019, mortonm@chromium.org wrote:

From: Micah Morton <mortonm@chromium.org>

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.

I can't recall if this has been mentioned, but is this code already 
shipping in any distros or products, and are any distros planning on 
enabling this feature?



- James
-- 
James Morris
[off-list ref]