From ca06d3a2e53e3ba66a9d7e65bdba68c6dc4215e6 Mon Sep 17 00:00:00 2001
From: Loup Vaillant <loup@loup-vaillant.fr>
Date: Thu, 2 Feb 2023 11:15:26 +0100
Subject: [PATCH] Fix UB (pointer pointing outside of object)

---
 src/optional/monocypher-ed25519.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/optional/monocypher-ed25519.c b/src/optional/monocypher-ed25519.c
index 2dfa9ac..e6692b7 100644
--- a/src/optional/monocypher-ed25519.c
+++ b/src/optional/monocypher-ed25519.c
@@ -363,7 +363,7 @@ void crypto_sha512_hkdf_expand(u8       *okm,  size_t okm_size,
 		COPY(okm, blk, out_size);
 
 		not_first = 1;
-		okm      += 64;
+		okm      += out_size;
 		okm_size -= out_size;
 		ctr++;
 	}
-- 
2.47.3