From b6a6451482a3ff5e30f43ef888159d4b0d39143b Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@sudo.ws>
Date: Thu, 9 Jun 2022 07:34:55 -0600
Subject: [PATCH] Fix regression with zero-length messages introduced in
 protobuf-c PR 500.

---
 lib/protobuf-c/protobuf-c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/protobuf-c/protobuf-c.c b/lib/protobuf-c/protobuf-c.c
index 9d56e1fec..3cc22c5f0 100644
--- a/lib/protobuf-c/protobuf-c.c
+++ b/lib/protobuf-c/protobuf-c.c
@@ -2618,7 +2618,7 @@ parse_required_member(ScannedMember *scanned_member,
 			return FALSE;
 
 		def_mess = scanned_member->field->default_value;
-		if (len > pref_len) {
+		if (len >= pref_len) {
 			subm = protobuf_c_message_unpack(scanned_member->field->descriptor,
 							 allocator,
 							 len - pref_len,
-- 
2.33.0

