From 198f8d60042c8c0df4baed3c7019381ff4b4d752 Mon Sep 17 00:00:00 2001
From: estkme <145633413+estkme@users.noreply.github.com>
Date: Mon, 23 Oct 2023 00:25:04 +0800
Subject: [PATCH] fix a bug when derutil parse zero length tag

---
 euicc/derutil.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/euicc/derutil.c b/euicc/derutil.c
index ba86f4b..e947f5c 100644
--- a/euicc/derutil.c
+++ b/euicc/derutil.c
@@ -136,6 +136,11 @@ int euicc_derutil_tag_find(uint8_t **rptr, uint8_t *buffer, uint32_t buffer_len,
                     }
                     return current_length;
                 }
+                if (current_length == 0)
+                {
+                    state = 0;
+                    continue;
+                }
                 current_length--;
                 if (current_length == 0)
                 {