Add changelog

Signed-off-by: Paul Elliott <paul.elliott@arm.com>
diff --git a/ChangeLog.d/fix-aes-cbc-iv-corruption b/ChangeLog.d/fix-aes-cbc-iv-corruption
new file mode 100644
index 0000000..11eb946
--- /dev/null
+++ b/ChangeLog.d/fix-aes-cbc-iv-corruption
@@ -0,0 +1,3 @@
+Bugfix
+   * Fix a potential corruption of the passed-in IV when mbedtls_aes_crypt_cbc()
+     is called with zero length and padlock is not enabled.