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network/sysctl-monitor: fix use-after-free

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Previously, manager_free() did not assign NULL to Manager.sysctl_shadow,
hence sysctl_clear_link_shadows() called by link_free() will causes
use-after-free. To fix the issue, this makes Manager.sysctl_shadow will be
set to NULL after it is freed,

Fixes a bug introduced by 6d9ef22acd.
This commit is contained in:
Yu Watanabe
2024-09-16 15:08:36 +09:00
parent 7c778cecdb
commit a2fbe9f3f9
1 changed files with 1 additions and 1 deletions
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2
src/network/networkd-manager.c
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@@ -624,7 +624,7 @@ Manager* manager_free(Manager *m) {
HASHMAP_FOREACH(link, m->links_by_index)
(void) link_stop_engines(link, true);
hashmap_free(m->sysctl_shadow);
m->sysctl_shadow = hashmap_free(m->sysctl_shadow);
m->request_queue = ordered_set_free(m->request_queue);
m->remove_request_queue = ordered_set_free(m->remove_request_queue);