From f0568bff9b344586dfa4ca2cd3d60fda426fabe6 Mon Sep 17 00:00:00 2001
From: Brian Gianforcaro <bgianf@serenityos.org>
Date: Fri, 30 Apr 2021 02:07:44 -0700
Subject: [PATCH] Kernel: Harden Socket Vector usage against OOM

---
 Kernel/Net/Socket.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Kernel/Net/Socket.cpp b/Kernel/Net/Socket.cpp
index b7c48c73cc..2ff8c6ce69 100644
--- a/Kernel/Net/Socket.cpp
+++ b/Kernel/Net/Socket.cpp
@@ -72,7 +72,8 @@ KResult Socket::queue_connection_from(NonnullRefPtr<Socket> peer)
     Locker locker(m_lock);
     if (m_pending.size() >= m_backlog)
         return ECONNREFUSED;
-    m_pending.append(peer);
+    if (!m_pending.try_append(peer))
+        return ENOMEM;
     evaluate_block_conditions();
     return KSuccess;
 }