diff --git a/ChangeLog.d/fix-cipher-iv.txt b/ChangeLog.d/fix-cipher-iv.txt
new file mode 100644
index 000000000..e7af6414a
--- /dev/null
+++ b/ChangeLog.d/fix-cipher-iv.txt
@@ -0,0 +1,5 @@
+Security
+   * In psa_cipher_generate_iv() and psa_cipher_encrypt(), do not read back
+     from the output buffer. This fixes a potential policy bypass or decryption
+     oracle vulnerability if the output buffer is in memory that is shared with
+     an untrusted application.