1 files changed, 3 insertions, 0 deletions

diff --git a/fs/namespace.c b/fs/namespace.c
index 3a1a87dc33df..43b16af8af30 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1544,6 +1544,9 @@ SYSCALL_DEFINE2(umount, char __user *, name, int, flags)
                 goto dput_and_out;
         if (mnt->mnt.mnt_flags & MNT_LOCKED)
                 goto dput_and_out;
+        retval = -EPERM;
+        if (flags & MNT_FORCE && !capable(CAP_SYS_ADMIN))
+                goto dput_and_out;
 
         retval = do_umount(mnt, flags);
 dput_and_out: