From 59773fc467361a12971329e3fb5eaddff84b866e Mon Sep 17 00:00:00 2001
From: Eduard Fischer-Szava <50618110+EduardF1@users.noreply.github.com>
Date: Sun, 7 Jun 2026 03:11:34 +0200
Subject: [PATCH] fix(buffer): resolve Blob.prototype.stream() memory leak

Fixes #63574
---
 lib/internal/blob.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/internal/blob.js b/lib/internal/blob.js
index f16e520e197cdd..fc029674eb579f 100644
--- a/lib/internal/blob.js
+++ b/lib/internal/blob.js
@@ -530,6 +530,9 @@ function createBlobReaderStream(reader) {
         pending.reject(reason);
       }
       this.pendingPulls = [];
+      // Explicitly clear the reader wakeup callback to sever the GC reference
+      // between the active C++ handle and the pending JS stream.
+      reader.setWakeup(undefined);
     },
   // We set the highWaterMark to 0 because we do not want the stream to
   // start reading immediately on creation. We want it to wait until read