From 6b218dd38b52f6ab05ec4bb0eb746b76534203de Mon Sep 17 00:00:00 2001
From: Marcos Guillermo <marcos.cosson@ccc.ufcg.edu.br>
Date: Tue, 23 Dec 2025 17:37:59 -0300
Subject: [PATCH] kubectl: Fix panic in exec terminal size queue

Check if delegate is nil before calling Next() in terminalSizeQueueAdapter
to prevent a nil pointer dereference.

Kubernetes-commit: 72a5892dca945f000a30c7a763aa0696964b7e50
---
 pkg/cmd/exec/exec.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkg/cmd/exec/exec.go b/pkg/cmd/exec/exec.go
index ca47976ce..d664ae3c5 100644
--- a/pkg/cmd/exec/exec.go
+++ b/pkg/cmd/exec/exec.go
@@ -411,6 +411,10 @@ type terminalSizeQueueAdapter struct {
 }
 
 func (a *terminalSizeQueueAdapter) Next() *remotecommand.TerminalSize {
+	if a.delegate == nil {
+		return nil
+	}
+
 	next := a.delegate.Next()
 	if next == nil {
 		return nil