systemd/0035-dbus-common-avoid-leak-in-error-path.patch

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2013-10-21 23:35:36 +00:00
From 65f2e8e1f7a86e62630fd36e34609dc7fc09b474 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Fri, 11 Oct 2013 19:33:20 -0400
Subject: [PATCH] dbus-common: avoid leak in error path
src/shared/dbus-common.c:968:33: warning: Potential leak of memory pointed to by 'l'
return -EINVAL;
^~~~~~
---
src/shared/dbus-common.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/src/shared/dbus-common.c b/src/shared/dbus-common.c
index c727cae..3ba2d87 100644
--- a/src/shared/dbus-common.c
+++ b/src/shared/dbus-common.c
@@ -934,7 +934,7 @@ int bus_parse_strv_iter(DBusMessageIter *iter, char ***_l) {
int bus_parse_strv_pairs_iter(DBusMessageIter *iter, char ***_l) {
DBusMessageIter sub, sub2;
unsigned n = 0, i = 0;
- char **l;
+ _cleanup_strv_free_ char **l = NULL;
assert(iter);
assert(_l);
@@ -953,6 +953,7 @@ int bus_parse_strv_pairs_iter(DBusMessageIter *iter, char ***_l) {
l = new(char*, n*2+1);
if (!l)
return -ENOMEM;
+ l[0] = NULL; /* make sure that l is properly terminated at all times */
dbus_message_iter_recurse(iter, &sub);
@@ -968,26 +969,25 @@ int bus_parse_strv_pairs_iter(DBusMessageIter *iter, char ***_l) {
return -EINVAL;
l[i] = strdup(a);
- if (!l[i]) {
- strv_free(l);
+ if (!l[i])
return -ENOMEM;
- }
+ i++;
- l[++i] = strdup(b);
- if (!l[i]) {
- strv_free(l);
+ l[i] = strdup(b);
+ if (!l[i])
return -ENOMEM;
- }
-
i++;
+
dbus_message_iter_next(&sub);
}
assert(i == n*2);
l[i] = NULL;
- if (_l)
+ if (_l) {
*_l = l;
+ l = NULL; /* avoid freeing */
+ }
return 0;
}
--
1.8.4.652.g0d6e0ce