1 files changed, 2 insertions, 1 deletions

diff --git a/src/lib/libcrypto/objects/obj_lib.c b/src/lib/libcrypto/objects/obj_lib.c
index b0b0f2ff24..706fa0b0e7 100644
--- a/src/lib/libcrypto/objects/obj_lib.c
+++ b/src/lib/libcrypto/objects/obj_lib.c
@@ -82,7 +82,8 @@ ASN1_OBJECT *OBJ_dup(const ASN1_OBJECT *o)
         r->data=OPENSSL_malloc(o->length);
         if (r->data == NULL)
                 goto err;
-        memcpy(r->data,o->data,o->length);
+        if (o->data != NULL)
+                memcpy(r->data,o->data,o->length);
         r->length=o->length;
         r->nid=o->nid;
         r->ln=r->sn=NULL;