1 files changed, 8 insertions, 5 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyNull.c b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyNull.c
index 06602ec535..d3e8ec89a7 100644
--- a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyNull.c
+++ b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyNull.c
@@ -25,10 +25,12 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
   @param[in]  P7Data       Pointer to the PKCS#7 message to verify.
   @param[in]  P7Length     Length of the PKCS#7 message in bytes.
   @param[out] CertStack    Pointer to Signer's certificates retrieved from P7Data.
-                           It's caller's responsibility to free the buffer.
+                           It's caller's responsibility to free the buffer with
+                           Pkcs7FreeSigners().
   @param[out] StackLength  Length of signer's certificates in bytes.
   @param[out] TrustedCert  Pointer to a trusted certificate from Signer's certificates.
-                           It's caller's responsibility to free the buffer.
+                           It's caller's responsibility to free the buffer with
+                           Pkcs7FreeSigners().
   @param[out] CertLength   Length of the trusted certificate in bytes.
 
   @retval FALSE  This interface is not supported.
@@ -75,10 +77,11 @@ Pkcs7FreeSigners (
   @param[in]  P7Data            Pointer to the PKCS#7 message.
   @param[in]  P7Length          Length of the PKCS#7 message in bytes.
   @param[out] SignerChainCerts  Pointer to the certificates list chained to signer's
-                                certificate. It's caller's responsibility to free the buffer.
+                                certificate. It's caller's responsibility to free the buffer
+                                with Pkcs7FreeSigners().
   @param[out] ChainLength       Length of the chained certificates list buffer in bytes.
   @param[out] UnchainCerts      Pointer to the unchained certificates lists. It's caller's
-                                responsibility to free the buffer.
+                                responsibility to free the buffer with Pkcs7FreeSigners().
   @param[out] UnchainLength     Length of the unchained certificates list buffer in bytes.
 
   @retval  TRUE         The operation is finished successfully.
@@ -142,7 +145,7 @@ Pkcs7Verify (
   @param[in]   P7Data       Pointer to the PKCS#7 signed data to process.
   @param[in]   P7Length     Length of the PKCS#7 signed data in bytes.
   @param[out]  Content      Pointer to the extracted content from the PKCS#7 signedData.
-                            It's caller's responsibility to free the buffer.
+                            It's caller's responsibility to free the buffer with FreePool().
   @param[out]  ContentSize  The size of the extracted content in bytes.
 
   @retval     TRUE          The P7Data was correctly formatted for processing.