diff --git a/patches/v8/.patches b/patches/v8/.patches
index 3d636e7deae70..4afbf4fe981d0 100644
--- a/patches/v8/.patches
+++ b/patches/v8/.patches
@@ -9,4 +9,6 @@ do_not_export_private_v8_symbols_on_windows.patch
 include_string_in_v8_h.patch
 objects_fix_memory_leak_in_prototypeusers_add.patch
 fix_bug_in_receiver_maps_inference.patch
+make_createdynamicfunction_throw_if_disallowed.patch
 intl_fix_intl_numberformat_constructor.patch
+merged_make_createdynamicfunction_switch_context_before_throwing.patch
diff --git a/patches/v8/make_createdynamicfunction_throw_if_disallowed.patch b/patches/v8/make_createdynamicfunction_throw_if_disallowed.patch
new file mode 100644
index 0000000000000..bafd0b04ad476
--- /dev/null
+++ b/patches/v8/make_createdynamicfunction_throw_if_disallowed.patch
@@ -0,0 +1,66 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Mon, 30 Mar 2020 11:55:10 +0200
+Subject: Make CreateDynamicFunction throw if disallowed
+
+... instead of returning undefined.
+
+Bug: chromium:1065094
+Change-Id: I0b0397a8affd44b58e7f4777f32ba22bbd001ab1
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2124837
+Reviewed-by: Toon Verwaest <verwaest@chromium.org>
+Commit-Queue: Georg Neis <neis@chromium.org>
+Cr-Commit-Position: refs/heads/master@{#66902}
+
+diff --git a/src/builtins/builtins-function.cc b/src/builtins/builtins-function.cc
+index f75014d034626643ae83dc8f167a473b7291522c..b5c2e8b25f10f2fff9011a0a1bd1aeef23de5cb9 100644
+--- a/src/builtins/builtins-function.cc
++++ b/src/builtins/builtins-function.cc
+@@ -31,7 +31,7 @@ MaybeHandle<Object> CreateDynamicFunction(Isolate* isolate,
+ 
+   if (!Builtins::AllowDynamicFunction(isolate, target, target_global_proxy)) {
+     isolate->CountUsage(v8::Isolate::kFunctionConstructorReturnedUndefined);
+-    return isolate->factory()->undefined_value();
++    THROW_NEW_ERROR(isolate, NewTypeError(MessageTemplate::kNoAccess), Object);
+   }
+ 
+   // Build the source string.
+diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
+index 134a49f7480c87acbb08133a2d6a4d028bbdd090..7dcaa412199770d7c4f688d7f8a66d887130bf82 100644
+--- a/test/mjsunit/mjsunit.status
++++ b/test/mjsunit/mjsunit.status
+@@ -232,6 +232,9 @@
+   # BUG(v8:6306).
+   'wasm/huge-memory': [SKIP],
+ 
++  # Needs to be adapted after changes to Function constructor. chromium:1065094
++  'cross-realm-filtering': [SKIP],
++
+   # Allocates a huge string and then flattens it, very slow in debug mode.
+   'regress/regress-752764': [PASS, ['mode == debug', SLOW]],
+ 
+diff --git a/test/mjsunit/regress-1065094.js b/test/mjsunit/regress-1065094.js
+new file mode 100644
+index 0000000000000000000000000000000000000000..365e20285bb0505dec3f84c4df57db0525e7acc3
+--- /dev/null
++++ b/test/mjsunit/regress-1065094.js
+@@ -0,0 +1,19 @@
++// Copyright 2020 the V8 project authors. All rights reserved.
++// Use of this source code is governed by a BSD-style license that can be
++// found in the LICENSE file.
++
++// Flags: --allow-natives-syntax
++
++function f(fnConstructor) {
++    return Object.is(new fnConstructor(), undefined);
++}
++
++const realmIndex = Realm.createAllowCrossRealmAccess();
++const otherFunction = Realm.global(realmIndex).Function;
++Realm.detachGlobal(realmIndex);
++
++%PrepareFunctionForOptimization(f);
++assertFalse(f(Function));
++assertThrows(_ => f(otherFunction));
++%OptimizeFunctionOnNextCall(f);
++assertThrows(_ => f(otherFunction));
diff --git a/patches/v8/merged_make_createdynamicfunction_switch_context_before_throwing.patch b/patches/v8/merged_make_createdynamicfunction_switch_context_before_throwing.patch
new file mode 100644
index 0000000000000..9a58b9a8887c7
--- /dev/null
+++ b/patches/v8/merged_make_createdynamicfunction_switch_context_before_throwing.patch
@@ -0,0 +1,45 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Georg Neis <neis@chromium.org>
+Date: Tue, 31 Mar 2020 18:49:38 +0200
+Subject: Merged: Make CreateDynamicFunction switch context before throwing
+
+Revision: 093019ee1ab3a92de915c1f3a1a7a5a8c86e3a5d
+
+BUG=chromium:1065094,v8:10361
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=verwaest@chromium.org
+
+Change-Id: I19528a1bc6058e6596f34f73d13d9c249cc6c3a7
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2130127
+Commit-Queue: Georg Neis <neis@chromium.org>
+Reviewed-by: Toon Verwaest <verwaest@chromium.org>
+Cr-Commit-Position: refs/branch-heads/8.0@{#60}
+Cr-Branched-From: 69827db645fcece065bf16a795a4ec8d3a51057f-refs/heads/8.0.426@{#2}
+Cr-Branched-From: 2fe1552c5809d0dd92e81d36a5535cbb7c518800-refs/heads/master@{#65318}
+
+diff --git a/src/builtins/builtins-function.cc b/src/builtins/builtins-function.cc
+index b5c2e8b25f10f2fff9011a0a1bd1aeef23de5cb9..7275e2fcede16a41cc5998b4957be9b8a8e53b88 100644
+--- a/src/builtins/builtins-function.cc
++++ b/src/builtins/builtins-function.cc
+@@ -2,6 +2,7 @@
+ // Use of this source code is governed by a BSD-style license that can be
+ // found in the LICENSE file.
+ 
++#include "src/api/api-inl.h"
+ #include "src/builtins/builtins-utils-inl.h"
+ #include "src/builtins/builtins.h"
+ #include "src/codegen/code-factory.h"
+@@ -31,6 +32,11 @@ MaybeHandle<Object> CreateDynamicFunction(Isolate* isolate,
+ 
+   if (!Builtins::AllowDynamicFunction(isolate, target, target_global_proxy)) {
+     isolate->CountUsage(v8::Isolate::kFunctionConstructorReturnedUndefined);
++    // TODO(verwaest): We would like to throw using the calling context instead
++    // of the entered context but we don't currently have access to that.
++    HandleScopeImplementer* impl = isolate->handle_scope_implementer();
++    SaveAndSwitchContext save(
++        isolate, impl->LastEnteredOrMicrotaskContext()->native_context());
+     THROW_NEW_ERROR(isolate, NewTypeError(MessageTemplate::kNoAccess), Object);
+   }
+