diff --git a/ChangeLog b/ChangeLog
index 66f2153..3fa5593 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,10 @@
    * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt 
      required by PKCS1 v2.2
 
+Security
+   * Fix a potential integer underflow to buffer overread in 
+     mbedtls_rsa_rsaes_oaep_decrypt
+
 Bugfix
    * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
      arguments where the same (in-place doubling). Found and fixed by Janos