From: Jonathan Gray <jsg@jsg.id.au>
Date: Fri, 22 Jul 2022 08:21:21 +0000 (+1000)
Subject: fix use after free when WSACreateEvent() fails
X-Git-Tag: release-1.17.1rc1~16^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F720%2Fhead;p=thirdparty%2Funbound.git

fix use after free when WSACreateEvent() fails
---

diff --git a/util/tube.c b/util/tube.c
index 40556e720..422fdfc86 100644
--- a/util/tube.c
+++ b/util/tube.c
@@ -507,6 +507,7 @@ struct tube* tube_create(void)
 	if(tube->event == WSA_INVALID_EVENT) {
 		free(tube);
 		log_err("WSACreateEvent: %s", wsa_strerror(WSAGetLastError()));
+		return NULL;
 	}
 	if(!WSAResetEvent(tube->event)) {
 		log_err("WSAResetEvent: %s", wsa_strerror(WSAGetLastError()));