From dae843f6b7502f921a7e66f39e3714a39d860181 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Date: Wed, 19 Oct 2022 19:40:00 +0900
Subject: [PATCH] Bypass git submodule add/update with git config
 protocol.file.allow=always option.

Co-authored-by: Nobuyoshi Nakada <nobu@ruby-lang.org>
---
 test/rubygems/test_gem_source_git.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/rubygems/test_gem_source_git.rb b/test/rubygems/test_gem_source_git.rb
index 5702da05974b6..c3b324771fa4d 100644
--- a/test/rubygems/test_gem_source_git.rb
+++ b/test/rubygems/test_gem_source_git.rb
@@ -63,6 +63,11 @@ def test_checkout_local_cached
   end
 
   def test_checkout_submodules
+    # We need to allow to checkout submodules with file:// protocol
+    # CVE-2022-39253
+    # https://lore.kernel.org/lkml/xmqq4jw1uku5.fsf@gitster.g/
+    system(@git, *%W"config --global protocol.file.allow always")
+
     source = Gem::Source::Git.new @name, @repository, 'master', true
 
     git_gem 'b'