commit 3fc4616224db31d4c4b14d919dd5c719d4ab19f1
author Vadim Yanitskiy <axilirator@gmail.com> Fri Aug 03 03:45:06 2018 +0700
committer Harald Welte <laforge@gnumonks.org> Sun Aug 05 07:14:19 2018 +0000
tree ad9807c8f44be7f6051be2f41760b06cf1d8dc96
parent 893e49e99359fb80b25aa3ba5e1c8f03b07e66a3

gsm/gsm0480.c: prevent NULL-pointer dereference

Change-Id: I444d95941837458b46e581298f76f3a9926c8552

src/gsm/gsm0480.c

diff --git a/src/gsm/gsm0480.c b/src/gsm/gsm0480.c
index 2d2df4a..5b51c75 100644
--- a/src/gsm/gsm0480.c
+++ b/src/gsm/gsm0480.c
@@ -880,7 +880,11 @@
  */
 struct msgb *gsm0480_gen_return_error(uint8_t invoke_id, uint8_t error_code)
 {
-	struct msgb *msg = gsm0480_msgb_alloc_name("TS 04.80 ReturnError");
+	struct msgb *msg;
+
+	msg = gsm0480_msgb_alloc_name("TS 04.80 ReturnError");
+	if (!msg)
+		return NULL;
 
 	/* First insert the problem code */
 	msgb_push_TLV1(msg, GSM_0480_ERROR_CODE_TAG, error_code);
@@ -906,7 +910,11 @@
  */
 struct msgb *gsm0480_gen_reject(int invoke_id, uint8_t problem_tag, uint8_t problem_code)
 {
-	struct msgb *msg = gsm0480_msgb_alloc_name("TS 04.80 Reject");
+	struct msgb *msg;
+
+	msg = gsm0480_msgb_alloc_name("TS 04.80 Reject");
+	if (!msg)
+		return NULL;
 
 	/* First insert the problem code */
 	msgb_push_TLV1(msg, problem_tag, problem_code);