From 77328142b439235d6423345603a0a59905e54c96 Mon Sep 17 00:00:00 2001
From: Ben Ford <bford@digium.com>
Date: Thu, 25 Feb 2021 13:50:47 -0600
Subject: [PATCH] AST-2021-006 - res_pjsip_t38.c: Check for session_media on
reinvite.
When Asterisk sends a reinvite negotiating T38 faxing, it's possible a
crash can occur if the response contains a m=image and zero port. The
reinvite callback code now checks session_media to see if it is null or
not before trying to access the udptl variable on it.
ASTERISK-29305
Change-Id: I1dfc51c5fa586e38579ede4bc228edee213ccaa9
---
res/res_pjsip_t38.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/res/res_pjsip_t38.c b/res/res_pjsip_t38.c
index 63abce5abf..5d7f68d095 100644
--- a/res/res_pjsip_t38.c
+++ b/res/res_pjsip_t38.c
@@ -325,7 +325,7 @@ static int t38_reinvite_response_cb(struct ast_sip_session *session, pjsip_rx_da
* If there is a session_media object, but no udptl object available
* then it's assumed the stream was declined.
*/
- if (!session_media->udptl) {
+ if (session_media && !session_media->udptl) {
session_media = NULL;
}
--
GitLab