[openssl] OpenSSL_1_1_1-stable update

[Dr. Paul Dale]

The branch OpenSSL_1_1_1-stable has been updated
       via  474cd196d628b1f91efa32827b403e2c1d896f81 (commit)
      from  5b71c677781ca260c8d9968c103d92c44d644007 (commit)


- Log -----------------------------------------------------------------
commit 474cd196d628b1f91efa32827b403e2c1d896f81
Author: Daiki Ueno <dueno at redhat.com>
Date:   Thu Jul 8 19:22:36 2021 +0200

    BIO_lookup_ex: use AI_ADDRCONFIG only if explicit host name is given
    
    The flag only affects which record types are queried via DNS (A or
    AAAA, or both).  When node is NULL and AF_UNSPEC is used, it prevents
    getaddrinfo returning the right address associated with the loopback
    interface.
    
    Signed-off-by: Daiki Ueno <dueno at redhat.com>
    
    Reviewed-by: Dmitry Belyavskiy <beldmit at gmail.com>
    Reviewed-by: Paul Dale <pauli at openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/16039)

-----------------------------------------------------------------------

Summary of changes:
 crypto/bio/b_addr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/bio/b_addr.c b/crypto/bio/b_addr.c
index b023bbda40..ea15601f3d 100644
--- a/crypto/bio/b_addr.c
+++ b/crypto/bio/b_addr.c
@@ -689,7 +689,7 @@ int BIO_lookup_ex(const char *host, const char *service, int lookup_type,
         hints.ai_protocol = protocol;
 # ifdef AI_ADDRCONFIG
 #  ifdef AF_UNSPEC
-        if (family == AF_UNSPEC)
+        if (host != NULL && family == AF_UNSPEC)
 #  endif
             hints.ai_flags |= AI_ADDRCONFIG;
 # endif