diff --git a/fs/namespace.c b/fs/namespace.c index 1a69aa7869758348213850862b7f4b9d75d841ef..2e13f6cfe5dfd8ade0baded787f7b6250ed46841 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -2397,10 +2397,6 @@ static int do_new_mount(struct path *path, const char *fstype, int flags, return -ENODEV; if (user_ns != &init_user_ns) { - if (!(type->fs_flags & FS_USERNS_MOUNT)) { - put_filesystem(type); - return -EPERM; - } /* Only in special cases allow devices from mounts * created outside the initial user namespace. */ diff --git a/fs/super.c b/fs/super.c index 874c7e3ebb8f184e401a9737371e0315e2d22259..78790ada71915d539a204d6652913e98b3442ad7 100644 --- a/fs/super.c +++ b/fs/super.c @@ -466,6 +466,10 @@ struct super_block *sget_userns(struct file_system_type *type, struct super_block *old; int err; + if (!(flags & MS_KERNMOUNT) && + !(type->fs_flags & FS_USERNS_MOUNT) && + !capable(CAP_SYS_ADMIN)) + return ERR_PTR(-EPERM); retry: spin_lock(&sb_lock); if (test) {