From 5f675740442edc32f2dcbbe1453f49484440e7a8 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.
---
 staging/src/k8s.io/kubectl/pkg/cmd/exec/exec.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/staging/src/k8s.io/kubectl/pkg/cmd/exec/exec.go b/staging/src/k8s.io/kubectl/pkg/cmd/exec/exec.go
index ca47976ce8f..d664ae3c573 100644
--- a/staging/src/k8s.io/kubectl/pkg/cmd/exec/exec.go
+++ b/staging/src/k8s.io/kubectl/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