CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix unsol_bcast_probe_resp double free on alloc failure ieee80211_set_unsol_bcast_probe_resp() calls kfree_rcu() on the old template before allocating the replacement. If the kzalloc() then fails, it returns -ENOMEM while link->u.ap.unsol_bcast_probe_resp still points at the object already queued for freeing. A later update or AP teardown re-queues that same rcu_head; the second free is caught by KASAN when the RCU sheaf is processed in softirq: BUG: KASAN: double-free in rcu_free_sheaf (mm/slub.c:5850) Free of addr ffff88800d06f300 by task exploit/145 ... __rcu_free_sheaf_prepare (mm/slub.c:2634 mm/slub.c:2940) rcu_free_sheaf (mm/slub.c:5850) rcu_core (kernel/rcu/tree.c:2617 kernel/rcu/tree.c:2869) handle_softirqs (kernel/softirq.c:622) The buggy address belongs to the cache kmalloc-128 of size 128 Queue the old object for kfree_rcu() only after the new one is published, matching ieee80211_set_probe_resp() and ieee80211_set_s1g_short_beacon().
Засегнати продукти
- Linux Linux: 3b1c256eb4aedfc71dd97d5951ccff824b41d628 преди ca27a81cd77b698e5eb586a011bee6800c7ee4bd; 3b1c256eb4aedfc71dd97d5951ccff824b41d628 преди d62b55b7c7dc62887d7fd5648fb38f0bfaef53ae; 3b1c256eb4aedfc71dd97d5951ccff824b41d628 преди 0ace76e410d7f7d813b605825a3e593a79c3958f; 3b1c256eb4aedfc71dd97d5951ccff824b41d628 преди 1d067abcd37062426c59ec73dbc4e87a63f33fea
- Linux Linux: 6.7; преди 6.7; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък
История
- 5 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-64568
- https://nvd.nist.gov/vuln/detail/CVE-2026-64568
- https://git.kernel.org/stable/c/ca27a81cd77b698e5eb586a011bee6800c7ee4bd
- https://git.kernel.org/stable/c/d62b55b7c7dc62887d7fd5648fb38f0bfaef53ae
- https://git.kernel.org/stable/c/0ace76e410d7f7d813b605825a3e593a79c3958f
- https://git.kernel.org/stable/c/1d067abcd37062426c59ec73dbc4e87a63f33fea