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-rw-r--r--fs/proc/root.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 38bd5d4..45e5fb7 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -110,8 +110,11 @@ static struct dentry *proc_mount(struct file_system_type *fs_type,
ns = task_active_pid_ns(current);
options = data;
- if (!current_user_ns()->may_mount_proc ||
- !ns_capable(ns->user_ns, CAP_SYS_ADMIN))
+ if (!capable(CAP_SYS_ADMIN) && !fs_fully_visible(fs_type))
+ return ERR_PTR(-EPERM);
+
+ /* Does the mounter have privilege over the pid namespace? */
+ if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN))
return ERR_PTR(-EPERM);
}
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