From 931b4bc7c7909235c3c2f729cbcca3cc641bbbe7 Mon Sep 17 00:00:00 2001
From: haramjeong <04harams77@gmail.com>
Date: Tue, 12 May 2026 14:27:01 +0900
Subject: [PATCH] crypto: fix unhandled error in Hash._transform

Signed-off-by: haramjeong <04harams77@gmail.com>
---
 lib/internal/crypto/hash.js                   |  3 +-
 .../parallel/test-crypto-hash-stream-error.js | 32 +++++++++++++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 test/parallel/test-crypto-hash-stream-error.js

diff --git a/lib/internal/crypto/hash.js b/lib/internal/crypto/hash.js
index 857753c2b39f9c..6742d75957482a 100644
--- a/lib/internal/crypto/hash.js
+++ b/lib/internal/crypto/hash.js
@@ -122,7 +122,8 @@ Hash.prototype.copy = function copy(options) {
 };
 
 Hash.prototype._transform = function _transform(chunk, encoding, callback) {
-  this[kHandle].update(chunk, encoding);
+  if (!this[kHandle].update(chunk, encoding))
+    return callback(new ERR_CRYPTO_HASH_UPDATE_FAILED());
   callback();
 };
 
diff --git a/test/parallel/test-crypto-hash-stream-error.js b/test/parallel/test-crypto-hash-stream-error.js
new file mode 100644
index 00000000000000..ec4360f95429bf
--- /dev/null
+++ b/test/parallel/test-crypto-hash-stream-error.js
@@ -0,0 +1,32 @@
+'use strict';
+
+// Flags: --expose-internals
+
+const common = require('../common');
+if (!common.hasCrypto) common.skip('missing crypto');
+
+const assert = require('assert');
+const crypto = require('crypto');
+const { kHandle } = require('internal/crypto/util');
+
+/**
+ * This test verifies that the Hash stream properly surfaces an error
+ * when the underlying native update fails.
+ */
+
+const h = crypto.createHash('sha256');
+
+// Simulate native update failure by replacing the internal handle
+const fakeHandle = {
+  update: () => false,
+  digest: () => Buffer.from('')
+};
+
+h[kHandle] = fakeHandle;
+
+h.on('error', common.mustCall((err) => {
+  assert.strictEqual(err.code, 'ERR_CRYPTO_HASH_UPDATE_FAILED');
+}));
+
+h.write('test data');
+h.end();