CVE-2026-64568

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> wifi: mac80211: fix unsol_bcast_probe_resp double free on alloc failure<br /> <br /> ieee80211_set_unsol_bcast_probe_resp() calls kfree_rcu() on the old<br /> template before allocating the replacement. If the kzalloc() then fails,<br /> it returns -ENOMEM while link-&gt;u.ap.unsol_bcast_probe_resp still points<br /> at the object already queued for freeing. A later update or AP teardown<br /> re-queues that same rcu_head; the second free is caught by KASAN when the<br /> RCU sheaf is processed in softirq:<br /> <br /> BUG: KASAN: double-free in rcu_free_sheaf (mm/slub.c:5850)<br /> Free of addr ffff88800d06f300 by task exploit/145<br /> ...<br /> __rcu_free_sheaf_prepare (mm/slub.c:2634 mm/slub.c:2940)<br /> rcu_free_sheaf (mm/slub.c:5850)<br /> rcu_core (kernel/rcu/tree.c:2617 kernel/rcu/tree.c:2869)<br /> handle_softirqs (kernel/softirq.c:622)<br /> The buggy address belongs to the cache kmalloc-128 of size 128<br /> <br /> Queue the old object for kfree_rcu() only after the new one is published,<br /> matching ieee80211_set_probe_resp() and ieee80211_set_s1g_short_beacon().