[PATCH 3/7] bcrypt: Fix possible buffer overflow in export_gnutls_datum().

[Hans Leidekker]

From: Hans Leidekker

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

diff --git a/dlls/bcrypt/gnutls.c b/dlls/bcrypt/gnutls.c
index fa4a0793cda..aeef64fd642 100644
--- a/dlls/bcrypt/gnutls.c
+++ b/dlls/bcrypt/gnutls.c
@@ -659,7 +659,7 @@ static ULONG export_gnutls_datum( UCHAR *buffer, ULONG buflen, gnutls_datum_t *d
         size = buflen;
     }

-    if (buffer) memcpy( buffer + offset, src, size );
+    if (buffer) memcpy( buffer + offset, src, size - offset );
     return size;
 }