From 42e2dd999075c452b8780b62f683e1bcf386a579 Mon Sep 17 00:00:00 2001
From: Juliusz Sosinowicz <juliusz@wolfssl.com>
Date: Wed, 30 Jul 2025 14:16:52 +0200
Subject: [PATCH] Zero sha->buffer

msan reported it as an uninitialized buffer
---
 wolfcrypt/src/sha.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wolfcrypt/src/sha.c b/wolfcrypt/src/sha.c
index 8dc96625c..4537e964e 100644
--- a/wolfcrypt/src/sha.c
+++ b/wolfcrypt/src/sha.c
@@ -403,6 +403,7 @@
         sha->digest[4] = 0xC3D2E1F0L;
 
         sha->buffLen = 0;
+        XMEMSET(sha->buffer, 0, sizeof(sha->buffer));
         sha->loLen   = 0;
         sha->hiLen   = 0;
     #ifdef WOLFSSL_HASH_FLAGS