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| author | Jiří Klimeš <jklimes@redhat.com> | 2015-11-04 15:48:28 +0100 |
|---|---|---|
| committer | Jiří Klimeš <jklimes@redhat.com> | 2015-11-05 12:51:17 +0100 |
| commit | b9da3d93207e46de895fd07cfe9de1edfa79efef (patch) | |
| tree | 02fbd6c4df37bdeb8ead767af2ef7278dbb1c700 | |
| parent | 7fa51f4dca40e49ff1fbdfc12c184c74d32913b5 (diff) | |
| download | NetworkManager-b9da3d93207e46de895fd07cfe9de1edfa79efef.tar.gz | |
policy: fix looping through list while removing elements (rh #1175446)
When g_slist_remove() was called, iter2 became invalid and accessing it
could cause a crash. The same was true for iter.
Fix the problem by getting the next list item before an element removal.
See a similar fix in bluez
http://git.kernel.org/cgit/bluetooth/bluez.git/commit/?id=be8c5be809875ba449a10ca29f5244f0231f6b63
https://bugzilla.redhat.com/show_bug.cgi?id=1175446
https://bugzilla.redhat.com/show_bug.cgi?id=1277247
| -rw-r--r-- | src/nm-policy.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/nm-policy.c b/src/nm-policy.c index e186320d2e..3a4236faf5 100644 --- a/src/nm-policy.c +++ b/src/nm-policy.c @@ -752,17 +752,21 @@ process_secondaries (NMPolicy *policy, gboolean connected) { NMPolicyPrivate *priv = NM_POLICY_GET_PRIVATE (policy); - GSList *iter, *iter2; + GSList *iter, *iter2, *next, *next2; /* Loop through devices waiting for secondary connections to activate */ - for (iter = priv->pending_secondaries; iter; iter = g_slist_next (iter)) { + for (iter = priv->pending_secondaries; iter; iter = next) { PendingSecondaryData *secondary_data = (PendingSecondaryData *) iter->data; NMDevice *item_device = secondary_data->device; + next = g_slist_next (iter); + /* Look for 'active' in each device's secondary connections list */ - for (iter2 = secondary_data->secondaries; iter2; iter2 = g_slist_next (iter2)) { + for (iter2 = secondary_data->secondaries; iter2; iter2 = next2) { NMActiveConnection *secondary_active = NM_ACTIVE_CONNECTION (iter2->data); + next2 = g_slist_next (iter2); + if (active != secondary_active) continue; |