From 2ee1731966427b8ce17246a4f8254f91f885ea98 Mon Sep 17 00:00:00 2001
From: Brian Gianforcaro <bgianf@serenityos.org>
Date: Fri, 30 Apr 2021 03:18:10 -0700
Subject: [PATCH] Kernel: Harden Process Vector usage against OOM.

---
 Kernel/Process.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index c9ab5377f6..d9df7ba326 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -146,7 +146,10 @@ RefPtr<Process> Process::create_user_process(RefPtr<Thread>& first_thread, const
     auto process = adopt_ref(*new Process(first_thread, parts.take_last(), uid, gid, parent_pid, false, move(cwd), nullptr, tty));
     if (!first_thread)
         return {};
-    process->m_fds.resize(m_max_open_file_descriptors);
+    if (!process->m_fds.try_resize(m_max_open_file_descriptors)) {
+        first_thread = nullptr;
+        return {};
+    }
     auto& device_to_use_as_tty = tty ? (CharacterDevice&)*tty : NullDevice::the();
     auto description = device_to_use_as_tty.open(O_RDWR).value();
     process->m_fds[0].set(*description);