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| author | Eric W. Biederman <ebiederm@xmission.com> | 2017-09-19 01:58:08 +0300 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-05-24 20:02:25 +0300 |
| commit | bc6155d1326092f4c29fe05a32b614249620d88e (patch) | |
| tree | d36853f7e280a4dff8d653981ce71193218c77b7 /security/commoncap.c | |
| parent | 0031181c49ca94b14b11f08e447f40c6ebc842a4 (diff) | |
| download | linux-bc6155d1326092f4c29fe05a32b614249620d88e.tar.xz | |
fs: Allow superblock owner to access do_remount_sb()
Superblock level remounts are currently restricted to global
CAP_SYS_ADMIN, as is the path for changing the root mount to
read only on umount. Loosen both of these permission checks to
also allow CAP_SYS_ADMIN in any namespace which is privileged
towards the userns which originally mounted the filesystem.
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Serge Hallyn <serge@hallyn.com>
Acked-by: Christian Brauner <christian@brauner.io>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'security/commoncap.c')
0 files changed, 0 insertions, 0 deletions