diff --git a/man7/namespaces.7 b/man7/namespaces.7
index a1ad1a14b..5e8f230e1 100644
--- a/man7/namespaces.7
+++ b/man7/namespaces.7
@@ -192,6 +192,13 @@ This file is a handle for the user namespace of the process.
 .TP
 .IR /proc/[pid]/ns/uts " (since Linux 3.0)"
 This file is a handle for the UTS namespace of the process.
+.PP
+Permission to dereference or read
+.RB ( readlink (2))
+these symbolic links is governed by a ptrace access mode
+.B PTRACE_MODE_READ_FSCREDS
+check; see
+.BR ptrace (2).
 .\"
 .\" ==================== Cgroup namespaces ====================
 .\"