diff --git a/dlls/crypt32/crl.c b/dlls/crypt32/crl.c
index 9ae0d5d8aad..a1138b5ed67 100644
--- a/dlls/crypt32/crl.c
+++ b/dlls/crypt32/crl.c
@@ -275,7 +275,7 @@ static BOOL CRLContext_GetHashProp(PCCRL_CONTEXT context, DWORD dwPropId,
 {
     BOOL ret = CryptHashCertificate(0, algID, 0, toHash, toHashLen, pvData,
      pcbData);
-    if (ret)
+    if (ret && pvData)
     {
         CRYPT_DATA_BLOB blob = { *pcbData, pvData };
 
diff --git a/dlls/crypt32/ctl.c b/dlls/crypt32/ctl.c
index 65691bbf8a9..42abcd73346 100644
--- a/dlls/crypt32/ctl.c
+++ b/dlls/crypt32/ctl.c
@@ -505,7 +505,7 @@ static BOOL CTLContext_GetHashProp(PCCTL_CONTEXT context, DWORD dwPropId,
 {
     BOOL ret = CryptHashCertificate(0, algID, 0, toHash, toHashLen, pvData,
      pcbData);
-    if (ret)
+    if (ret && pvData)
     {
         CRYPT_DATA_BLOB blob = { *pcbData, pvData };