[PATCH] osmo-msc[master]: VLR: fix potential NULL dereference

This is merely a historical archive of years 2008-2021, before the migration to mailman3.

A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/gerrit-log@lists.osmocom.org/.

Max gerrit-no-reply at lists.osmocom.org
Mon Feb 12 15:52:55 UTC 2018


Review at  https://gerrit.osmocom.org/6388

VLR: fix potential NULL dereference

The vlr_subscr_get() can return NULL if its argument is NULL
(which isn't checked for) so before dereferencing it's result
we should check for it.

Change-Id: I13632908d0b67323202effa9dd6f29732a12cc91
---
M src/libmsc/gsm_04_08.c
1 file changed, 2 insertions(+), 1 deletion(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-msc refs/changes/88/6388/1

diff --git a/src/libmsc/gsm_04_08.c b/src/libmsc/gsm_04_08.c
index 7b6e94a..ac15d18 100644
--- a/src/libmsc/gsm_04_08.c
+++ b/src/libmsc/gsm_04_08.c
@@ -3716,7 +3716,8 @@
 	struct gsm_subscriber_connection *conn = msc_conn_ref;
 	OSMO_ASSERT(!conn->vsub);
 	conn->vsub = vlr_subscr_get(vsub);
-	conn->vsub->cs.attached_via_ran = conn->via_ran;
+	if (conn->vsub)
+		conn->vsub->cs.attached_via_ran = conn->via_ran;
 }
 
 /* operations that we need to implement for libvlr */

-- 
To view, visit https://gerrit.osmocom.org/6388
To unsubscribe, visit https://gerrit.osmocom.org/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: I13632908d0b67323202effa9dd6f29732a12cc91
Gerrit-PatchSet: 1
Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-Owner: Max <msuraev at sysmocom.de>



More information about the gerrit-log mailing list