From 70f6c42556afad75fa5c9734fe02cd8d2679ed0b Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Mon, 16 Sep 2019 19:38:33 -0600
Subject: wintun: use correct length for security attributes

---
 tun/wintun/namespace_windows.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tun/wintun/namespace_windows.go b/tun/wintun/namespace_windows.go
index 01fff91..de781a5 100644
--- a/tun/wintun/namespace_windows.go
+++ b/tun/wintun/namespace_windows.go
@@ -37,7 +37,7 @@ func initializeNamespace() error {
 		return fmt.Errorf("SddlToSecurityDescriptor failed: %v", err)
 	}
 	wintunObjectSecurityAttributes = &windows.SecurityAttributes{
-		Length:             uint32(len(sd)),
+		Length:             uint32(unsafe.Sizeof(windows.SecurityAttributes{})),
 		SecurityDescriptor: uintptr(unsafe.Pointer(&sd[0])),
 	}
 	sid, err := windows.CreateWellKnownSid(windows.WinLocalSystemSid)
-- 
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