[PATCH] libs/vkd3d-shader: Validate the DXBC version.

[Henri Verbeet]

Signed-off-by: Henri Verbeet 
---
 libs/vkd3d-shader/dxbc.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/libs/vkd3d-shader/dxbc.c b/libs/vkd3d-shader/dxbc.c
index 6aa2ffa..331b619 100644
--- a/libs/vkd3d-shader/dxbc.c
+++ b/libs/vkd3d-shader/dxbc.c
@@ -1814,6 +1814,7 @@ static HRESULT parse_dxbc(const char *data, SIZE_T data_size,
     DWORD chunk_count;
     DWORD total_size;
     unsigned int i;
+    DWORD version;
     DWORD tag;

read_dword(&ptr, &tag);
@@ -1828,7 +1829,13 @@ static HRESULT parse_dxbc(const char *data, SIZE_T data_size,
     WARN("Ignoring DXBC checksum.\n");
     skip_dword_unknown(&ptr, 4);

-    skip_dword_unknown(&ptr, 1); /* It seems to always be 0x00000001. */
+    read_dword(&ptr, &version);
+    TRACE("version: %#x.\n", version);
+    if (version != 0x00000001)
+    {
+        WARN("Got unexpected DXBC version %#x.\n", version);
+        return E_INVALIDARG;
+    }

read_dword(&ptr, &total_size);
     TRACE("total size: %#x\n", total_size);