From: Scott Griepentrog <scott@griepentrog.com>
Date: Wed, 2 Mar 2016 15:34:10 +0000 (-0600)
Subject: CHAOS: prevent crash on failed strdup
X-Git-Tag: 14.0.0-beta1~370
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fchanges%2F40%2F2340%2F2;p=thirdparty%2Fasterisk.git

CHAOS: prevent crash on failed strdup

This patch avoids crashing on a null pointer
if the strdup() allocation fails.

ASTERISK-25323

Change-Id: I3f67434820ba53b53663efd6cbb42749f4f6c0f5
---

diff --git a/res/res_pjsip_messaging.c b/res/res_pjsip_messaging.c
index 7532e39be5..20d1f9d993 100644
--- a/res/res_pjsip_messaging.c
+++ b/res/res_pjsip_messaging.c
@@ -530,6 +530,10 @@ static struct msg_data* msg_data_create(const struct ast_msg *msg, const char *t
 	/* Make sure we start with sip: */
 	mdata->to = ast_begins_with(to, "sip:") ? ast_strdup(++to) : ast_strdup(to - 3);
 	mdata->from = ast_strdup(from);
+	if (!mdata->to || !mdata->from) {
+		ao2_ref(mdata, -1);
+		return NULL;
+	}
 
 	/* sometimes from can still contain the tag at this point, so remove it */
 	if ((tag = strchr(mdata->from, ';'))) {