>From 55314083d43534d4fd50baeed0a4965a0a930b1a Mon Sep 17 00:00:00 2001
From: Jean-Louis Thekekara <address@hidden>
Date: Tue, 25 Mar 2014 17:15:58 +0100
Subject: [PATCH] asn1_write_value: fix segfault when deleting an unauthorized element

Segfaults can occur, since value is dereferenced later, ex:

 352       if ((isdigit (value[0])) || (value[0] == '-')
---
 lib/element.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/lib/element.c b/lib/element.c
index 3e26d84..ee77feb 100644
--- a/lib/element.c
+++ b/lib/element.c
@@ -303,6 +303,12 @@ asn1_write_value (asn1_node node_root, const char *name,
       return ASN1_SUCCESS;
     }
 
+  /* Don't allow element deletion for other types */
+  if (value == NULL)
+    {
+      return ASN1_VALUE_NOT_VALID;
+    }
+
   switch (type)
     {
     case ASN1_ETYPE_BOOLEAN:
-- 
1.7.2.5