--- crypto/openssh/auth-passwd.c.orig
+++ crypto/openssh/auth-passwd.c
@@ -66,6 +66,8 @@
 #define DAY		(24L * 60 * 60) /* 1 day in seconds */
 #define TWO_WEEKS	(2L * 7 * DAY)	/* 2 weeks in seconds */
 
+#define MAX_PASSWORD_LEN	1024
+
 void
 disable_forwarding(void)
 {
@@ -87,6 +89,9 @@
 	static int expire_checked = 0;
 #endif
 
+	if (strlen(password) > MAX_PASSWORD_LEN)
+		return 0;
+
 #ifndef HAVE_CYGWIN
 	if (pw->pw_uid == 0 && options.permit_root_login != PERMIT_YES)
 		ok = 0;