From: Liam Girdwood <lrg@slimlogic.co.uk>
Date: Tue, 21 Dec 2010 22:11:56 +0000 (+0100)
Subject: ucm: check for valid value list before dereference.
X-Git-Tag: v1.0.24~6^2~7
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=ebb52f69117f9975de46623f5ba32f3c081fe691;p=alsa-lib.git

ucm: check for valid value list before dereference.

Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
---

diff --git a/src/ucm/main.c b/src/ucm/main.c
index ff7b5e47..aafa4839 100644
--- a/src/ucm/main.c
+++ b/src/ucm/main.c
@@ -957,6 +957,9 @@ static int get_value1(const char **value, struct list_head *value_list,
         struct ucm_value *val;
         struct list_head *pos;
         
+	if (!value_list)
+		return -ENOENT;
+
         list_for_each(pos, value_list) {
               val = list_entry(pos, struct ucm_value, list);
               if (check_identifier(identifier, val->name)) {