From: George Thessalonikefs <george@nlnetlabs.nl>
Date: Fri, 23 Jul 2021 15:51:42 +0000 (+0200)
Subject: - Fix for #411, #439, #469: stream reuse, fix linking when touching the
X-Git-Tag: release-1.13.2rc1~19^2~9
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f9ad139c08000b9c7ae67a9592b5e9cb505f1fab;p=thirdparty%2Funbound.git

- Fix for #411, #439, #469: stream reuse, fix linking when touching the
  tcp_reuse LRU list.
---

diff --git a/services/outside_network.c b/services/outside_network.c
index b40c3076e..8b8deea91 100644
--- a/services/outside_network.c
+++ b/services/outside_network.c
@@ -753,6 +753,9 @@ reuse_tcp_lru_touch(struct outside_network* outnet, struct reuse_tcp* reuse)
 	/* insert at the front */
 	reuse->lru_prev = NULL;
 	reuse->lru_next = outnet->tcp_reuse_first;
+	if(outnet->tcp_reuse_first) {
+		outnet->tcp_reuse_first->lru_prev = reuse;
+	}
 	log_assert(reuse->lru_next != reuse);
 	/* since it is not first, it is not the only element and
 	 * lru_next is thus not NULL and thus reuse is now not the last in