diff --git a/.travis.yml b/.travis.yml
index 4cf5853..2b41c28 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -41,7 +41,7 @@
 env:
   global:
     - SEED=1
-    - secure: "FrI5d2s+ckckC17T66c8jm2jV6i2DkBPU5nyWzwbedjmEBeocREfQLd/x8yKpPzLDz7ghOvr+/GQvsPPn0dVkGlNzm3Q+hGHc/ujnASuUtGrcuMM+0ALnJ3k4rFr9xEvjJeWb4SmhJO5UCAZYvTItW4k7+bj9L+R6lt3TzQbXzg="
+    - secure: "JECCru6HASpKZ0OLfHh8f/KXhKkdrCwjquZghd/qbA4ksxsWImjR7KEPERcaPndXEilzhDbKwuFvJiQX2duVgTGoq745YGhLZIjzo1i8tySkceCVd48P8WceYGz+F/bmY7r+m6fFNuxDSoGGSVeA4Lnjvmm8PFUP45YodDV9no4="
 
 addons:
   apt:
@@ -49,7 +49,7 @@
     - gnutls-bin
   coverity_scan:
     project:
-      name: "Mbed-TLS/mbedtls"
+      name: "ARMmbed/mbedtls"
     notification_email: support-mbedtls@arm.com
     build_command_prepend:
     build_command: make
diff --git a/ChangeLog.d/fix-undefined-memcpy-mbedtls_asn1_named_data.txt b/ChangeLog.d/fix-undefined-memcpy-mbedtls_asn1_named_data.txt
new file mode 100644
index 0000000..b30f7fa
--- /dev/null
+++ b/ChangeLog.d/fix-undefined-memcpy-mbedtls_asn1_named_data.txt
@@ -0,0 +1,3 @@
+Bugfix
+   * Fix undefined behavior in mbedtls_asn1_find_named_data(), where val is
+     not NULL and val_len is zero.
diff --git a/library/asn1write.c b/library/asn1write.c
index 3811ef2..d454841 100644
--- a/library/asn1write.c
+++ b/library/asn1write.c
@@ -472,7 +472,7 @@
         cur->val.len = val_len;
     }
 
-    if( val != NULL )
+    if( val != NULL && val_len != 0 )
         memcpy( cur->val.p, val, val_len );
 
     return( cur );
diff --git a/tests/suites/test_suite_asn1write.data b/tests/suites/test_suite_asn1write.data
index 7f5f536..f844d48 100644
--- a/tests/suites/test_suite_asn1write.data
+++ b/tests/suites/test_suite_asn1write.data
@@ -374,10 +374,13 @@
 store_named_data_val_found:4:9
 
 Store named data: new, val_len=0
-store_named_data_val_new:0
+store_named_data_val_new:0:1
+
+Stored named data: new, val_len=0, val=NULL
+store_named_data_val_new:0:0
 
 Store named data: new, val_len=4
-store_named_data_val_new:4
+store_named_data_val_new:4:1
 
 Store named data: new, val_len=4, val=NULL
-store_named_data_val_new:-4
+store_named_data_val_new:4:0
diff --git a/tests/suites/test_suite_asn1write.function b/tests/suites/test_suite_asn1write.function
index 8824739..597d6ac 100644
--- a/tests/suites/test_suite_asn1write.function
+++ b/tests/suites/test_suite_asn1write.function
@@ -431,7 +431,7 @@
 /* END_CASE */
 
 /* BEGIN_CASE */
-void store_named_data_val_new( int new_len )
+void store_named_data_val_new( int new_len, int set_new_val )
 {
     mbedtls_asn1_named_data *head = NULL;
     mbedtls_asn1_named_data *found = NULL;
@@ -439,10 +439,8 @@
     size_t oid_len = strlen( (const char *) oid );
     const unsigned char *new_val = (unsigned char *) "new value";
 
-    if( new_len <= 0 )
+    if( set_new_val == 0 )
         new_val = NULL;
-    if( new_len < 0 )
-        new_len = - new_len;
 
     found = mbedtls_asn1_store_named_data( &head,
                                            (const char *) oid, oid_len,