From: Matthew Nicholson <mnicholson@digium.com>
Date: Mon, 16 May 2011 15:51:53 +0000 (+0000)
Subject: Make sure tcptls_session exists before dereferencing it.
X-Git-Tag: 1.6.2.19-rc1~3^2~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=229e1541becd129b571e878af5bcb056429c2d53;p=thirdparty%2Fasterisk.git

Make sure tcptls_session exists before dereferencing it.

(closes issue #19192)
Reported by: stknob
Patches:
      10-tcptls-unreachable-peer-segfault.patch uploaded by Chainsaw (license 723)
Tested by: vois, Chainsaw



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@319141 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 85957187cc..f2cfcf04d6 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -3213,7 +3213,7 @@ static void *_sip_tcp_helper_thread(struct sip_pvt *pvt, struct ast_tcptls_sessi
 	ast_debug(2, "Shutting down thread for %s server\n", tcptls_session->ssl ? "SSL" : "TCP");
 
 cleanup:
-	if (!tcptls_session->client && !authenticated) {
+	if (tcptls_session && !tcptls_session->client && !authenticated) {
 		ast_atomic_fetchadd_int(&unauth_sessions, -1);
 	}