[PATCH v3 0/3] MR1908: msi: pSignatureSettings uninitialized

[Philip Karlsson Gisslow (＠ripxorip)]

This field was not unitilized so it got a random value from
the stack causing a later crash when it was dereferenced in Wintrust
(SoftPubloadSignature).

--
  v3: Sends the correct pointer to memset

https://gitlab.winehq.org/wine/wine/-/merge_requests/1908

[PATCH v3 1/3] msi: pSignatureSettings uninitialized

[Philip K. Gisslow]

From: "Philip K. Gisslow"

This field was not unitilized so it got a random value from
the stack causing a later crash when it was dereferenced in Wintrust
(SoftPubloadSignature).
---
 dlls/msi/msi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dlls/msi/msi.c b/dlls/msi/msi.c
index db04babb899..886c5d3ba6f 100644
--- a/dlls/msi/msi.c
+++ b/dlls/msi/msi.c
@@ -2556,6 +2556,7 @@ HRESULT WINAPI MsiGetFileSignatureInformationW( const WCHAR *path, DWORD flags,
     data.pwszURLReference    = NULL;
     data.dwProvFlags         = 0;
     data.dwUIContext         = WTD_UICONTEXT_INSTALL;
+    data.pSignatureSettings  = NULL;
     hr = WinVerifyTrustEx( INVALID_HANDLE_VALUE, &generic_verify_v2, &data );
     *cert = NULL;
     if (FAILED(hr)) goto done;

[PATCH v3 2/3] Memset the struct to avoid exlicit initialization

[Philip K. Gisslow]

From: "Philip K. Gisslow"

As suggested by Nikolay and Zebediah
---
 dlls/msi/msi.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/dlls/msi/msi.c b/dlls/msi/msi.c
index 886c5d3ba6f..29a50625a57 100644
--- a/dlls/msi/msi.c
+++ b/dlls/msi/msi.c
@@ -2544,19 +2544,15 @@ HRESULT WINAPI MsiGetFileSignatureInformationW( const WCHAR *path, DWORD flags,
     info.hFile          = NULL;
     info.pgKnownSubject = NULL;

+    memset( data, 0, sizeof(data) );
     data.cbStruct            = sizeof(data);
-    data.pPolicyCallbackData = NULL;
-    data.pSIPClientData      = NULL;
     data.dwUIChoice          = WTD_UI_NONE;
     data.fdwRevocationChecks = WTD_REVOKE_WHOLECHAIN;
     data.dwUnionChoice       = WTD_CHOICE_FILE;
     data.u.pFile             = &info;
     data.dwStateAction       = WTD_STATEACTION_VERIFY;
-    data.hWVTStateData       = NULL;
-    data.pwszURLReference    = NULL;
-    data.dwProvFlags         = 0;
     data.dwUIContext         = WTD_UICONTEXT_INSTALL;
-    data.pSignatureSettings  = NULL;
+
     hr = WinVerifyTrustEx( INVALID_HANDLE_VALUE, &generic_verify_v2, &data );
     *cert = NULL;
     if (FAILED(hr)) goto done;

[PATCH v3 3/3] Sends the correct pointer to memset

[Philip K. Gisslow]

From: "Philip K. Gisslow"

---
 dlls/msi/msi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/msi/msi.c b/dlls/msi/msi.c
index 29a50625a57..3ebfd94a9f0 100644
--- a/dlls/msi/msi.c
+++ b/dlls/msi/msi.c
@@ -2544,7 +2544,7 @@ HRESULT WINAPI MsiGetFileSignatureInformationW( const WCHAR *path, DWORD flags,
     info.hFile          = NULL;
     info.pgKnownSubject = NULL;

-    memset( data, 0, sizeof(data) );
+    memset( &data, 0, sizeof(data) );
     data.cbStruct            = sizeof(data);
     data.dwUIChoice          = WTD_UI_NONE;
     data.fdwRevocationChecks = WTD_REVOKE_WHOLECHAIN;

[Nikolay Sivov (＠nsivov)]

@ripxorip please squash these commits locally and then force push to have a single commit.