bcrypt: Fix possible buffer overflow in export_gnutls_datum().

ffad823e · Hans Leidekker · Alexandre Julliard · cb3cc2b5 · ffad823e
Commit ffad823e authored Nov 16, 2022 by Hans Leidekker Committed by Alexandre Julliard Dec 06, 2022
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gnutls.c dlls/bcrypt/gnutls.c +1 -1

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--- 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;
 }