From 7863389ad0e31bee853ba5c7399637edbead31a1 Mon Sep 17 00:00:00 2001
From: Kazuki Yamaguchi <k@rhe.jp>
Date: Sun, 5 Oct 2025 19:38:47 +0900
Subject: [PATCH] [ruby/openssl] ssl: remove
 OpenSSL::X509::V_FLAG_CRL_CHECK_ALL from the default store

With OpenSSL 3.6.0, it causes nearly every certificate verification to
fail with the message "certificate verify failed (unable to get
certificate CRL)" because the CRLs are typically unavailable in the
default store used by OpenSSL::SSL::SSLContext#set_params.

OpenSSL::X509::V_FLAG_CRL_CHECK_ALL is a flag that extends the CRL
checking to all certificates in the chain. In OpenSSL < 3.6.0, the flag
alone has no effect, and OpenSSL::X509::V_FLAG_CRL_CHECK must also be
set to enable CRL checking.

In OpenSSL 3.6.0, OpenSSL::X509::V_FLAG_CRL_CHECK_ALL now implies
OpenSSL::X509::V_FLAG_CRL_CHECK. This is inconsistent with the man page
and may be fixed in a future OpenSSL 3.6.x release, but this flag is not
needed and should not be set by default.

Fixes https://github.com/ruby/openssl/issues/949

https://github.com/ruby/openssl/commit/e8481cd687
---
 ext/openssl/lib/openssl/ssl.rb | 1 -
 1 file changed, 1 deletion(-)

diff --git a/ext/openssl/lib/openssl/ssl.rb b/ext/openssl/lib/openssl/ssl.rb
index a0ad5dc3a6..46509c333e 100644
--- a/ext/openssl/lib/openssl/ssl.rb
+++ b/ext/openssl/lib/openssl/ssl.rb
@@ -91,7 +91,6 @@ ssbzSibBsu/6iGtCOGEoXJf//////////wIBAg==
 
       DEFAULT_CERT_STORE = OpenSSL::X509::Store.new # :nodoc:
       DEFAULT_CERT_STORE.set_default_paths
-      DEFAULT_CERT_STORE.flags = OpenSSL::X509::V_FLAG_CRL_CHECK_ALL
 
       # A callback invoked when DH parameters are required for ephemeral DH key
       # exchange.