From 676dfb7edbf55fa361e5cfb03040451a4f939d90 Mon Sep 17 00:00:00 2001
From: Colton Willey <colton@wolfssl.com>
Date: Tue, 14 May 2024 16:59:28 -0700
Subject: [PATCH] Do not allow NULL terminators in the middle of alt name for
 pattern matching. ZD 17987

---
 src/internal.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/internal.c b/src/internal.c
index 439139889..4d10cc803 100644
--- a/src/internal.c
+++ b/src/internal.c
@@ -12386,6 +12386,8 @@ int MatchDomainName(const char* pattern, int len, const char* str)
             while (--len > 0) {
                 p = (char)XTOLOWER((unsigned char)*pattern);
                 pattern++;
+                if (p == '\0' && len > 0)
+                    return 0;
                 if (p != '*')
                     break;
             }