diff -urp openssh-8.7p1-43.el9-tree.orig/auth-krb5.c openssh-8.7p1-43.el9-tree.krb5-ssh_asprintf_append/auth-krb5.c
--- openssh-8.7p1-43.el9-tree.orig/auth-krb5.c	2025-02-14 00:31:18.629510914 +0000
+++ openssh-8.7p1-43.el9-tree.krb5-ssh_asprintf_append/auth-krb5.c	2025-02-21 03:37:13.106465704 +0000
@@ -309,13 +309,14 @@ ssh_asprintf_append(char **dsc, const ch
 	i = vasprintf(&src, fmt, ap);
 	va_end(ap);
 
-	if (i == -1 || src == NULL)
+	if (i == -1)
 		return -1;
 
 	old = *dsc;
 
 	i = asprintf(dsc, "%s%s", *dsc, src);
-	if (i == -1 || src == NULL) {
+	if (i == -1) {
+		*dsc = old;
 		free(src);
 		return -1;
 	}