From: Sungtae Kim <pchero21@gmail.com>
Date: Sun, 13 Dec 2020 12:03:32 +0000 (+0100)
Subject: res_pjsip_session: Fixed NULL active media topology handle
X-Git-Tag: 16.16.0-rc1~15
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab3f57d88f2ba8166c3684c10956caade3966e2b;p=thirdparty%2Fasterisk.git

res_pjsip_session: Fixed NULL active media topology handle

Added NULL pointer check to prevent Asterisk crash.

ASTERISK-29215

Change-Id: If07e50ea8d78cb610af9195fc13b5dca4bfcef95
---

diff --git a/res/res_pjsip_session.c b/res/res_pjsip_session.c
index 34bd59741b..d15d7cb58d 100644
--- a/res/res_pjsip_session.c
+++ b/res/res_pjsip_session.c
@@ -2268,7 +2268,7 @@ static int sip_session_refresh(struct ast_sip_session *session,
 					ast_sip_session_get_name(session));
 			}
 
-			if (active_media_state) {
+			if (active_media_state && active_media_state->topology) {
 				struct ast_sip_session_media_state *new_pending_state;
 				/*
 				 * We need to check if the passed in active and pending states are equal