From f44a0d7ea219371cf3e85c7efe80b06984795091 Mon Sep 17 00:00:00 2001
From: Simon Arlott <sa.me.uk>
Date: Sat, 23 Feb 2019 13:15:34 +0000
Subject: [PATCH] m_sasl: Don't process authentication messages if SASL has
 been aborted

---
 modules/m_sasl.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/m_sasl.c b/modules/m_sasl.c
index f302f1b6..c735580e 100644
--- a/modules/m_sasl.c
+++ b/modules/m_sasl.c
@@ -229,6 +229,10 @@ me_sasl(struct Client *client_p, struct Client *source_p,
 	if(!IsService(agent_p))
 		return 0;
 
+	/* If SASL has been aborted, do nothing. */
+	if (target_p->localClient->sasl_out != 0)
+		return 0;
+
 	/* Reject if someone has already answered. */
 	if(*target_p->localClient->sasl_agent && strncmp(parv[1], target_p->localClient->sasl_agent, IDLEN))
 		return 0;