[PATCH 2/3] ntdll: Validate fd type in IOCTL_AFD_WINE_COMPLETE_ASYNC.

[Elizabeth Figura]

From: Elizabeth Figura

---
 dlls/ntdll/unix/socket.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/unix/socket.c b/dlls/ntdll/unix/socket.c
index a02194f843f..5156bbfee10 100644
--- a/dlls/ntdll/unix/socket.c
+++ b/dlls/ntdll/unix/socket.c
@@ -1755,12 +1755,16 @@ NTSTATUS sock_ioctl( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc

case IOCTL_AFD_WINE_COMPLETE_ASYNC:
         {
+            enum server_fd_type type;
+
             if (in_size != sizeof(NTSTATUS))
                 return STATUS_BUFFER_TOO_SMALL;

-            if ((status = server_get_unix_fd( handle, 0, &fd, &needs_close, NULL, &options )))
+            if ((status = server_get_unix_fd( handle, 0, &fd, &needs_close, &type, &options )))
                 return status;
             if (needs_close) close( fd );
+            if (type != FD_TYPE_SOCKET)
+                return STATUS_INVALID_DEVICE_REQUEST;

status = *(NTSTATUS *)in_buffer;
             file_complete_async( handle, options, event, apc, apc_user, io, status, 0 );