diff --git a/ChangeLog.d/zeroize_key_buffers_before_free.txt b/ChangeLog.d/zeroize_key_buffers_before_free.txt
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+Security
+   * Zeroize dynamically-allocated buffers used by the PSA Crypto key storage
+     module before freeing them. These buffers contain secret key material, and
+     could thus potentially leak the key through freed heap.