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-rw-r--r--fs/namespace.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 72bb1062bfe..b696e3a0d18 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -886,6 +886,9 @@ static int do_change_type(struct nameidata *nd, int flag)
int recurse = flag & MS_REC;
int type = flag & ~MS_REC;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
if (nd->dentry != nd->mnt->mnt_root)
return -EINVAL;