{"affected":[],"cveId":"CVE-2026-64570","cwes":["CWE-415"],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: fix fils_discovery double free on alloc failure\n\nieee80211_set_fils_discovery() calls kfree_rcu() on the old template\nbefore allocating the replacement. If the kzalloc() then fails, it\nreturns -ENOMEM while link->u.ap.fils_discovery still points at the\nobject already queued for freeing. A later update or AP teardown\n(ieee80211_stop_ap()) re-queues that same rcu_head; the second free is\ncaught by KASAN when the RCU sheaf is processed in softirq:\n\n  BUG: KASAN: double-free in rcu_free_sheaf (mm/slub.c:5850)\n  Free of addr ffff88800c065280 by task swapper/0/0\n   ...\n   __rcu_free_sheaf_prepare (mm/slub.c:2634 mm/slub.c:2940)\n   rcu_free_sheaf (mm/slub.c:5850)\n   rcu_core (kernel/rcu/tree.c:2617 kernel/rcu/tree.c:2869)\n   handle_softirqs (kernel/softirq.c:622)\n  The buggy address belongs to the cache kmalloc-96 of size 96\n\nQueue the old object for kfree_rcu() only after the new one is published,\nmatching ieee80211_set_probe_resp() and ieee80211_set_s1g_short_beacon().","epss":null,"exploits":[],"kev":null,"metrics":[{"score":7.8,"severity":"high","source":"NVD: 416baaa9-dc9f-4396-8d5f-8c081fb06d67","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793729739353,"publishedAt":1785917796680,"references":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/1981fba71797ec95e6755fb882cad88899a2a84f"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/286e52a799fa158bdbd77da1426c4d93f9a6e7ad"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/5baaa1042f71dd4b8e418f2cdd516808702d229b"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/e2c55079155a953db669ca1986a985fa286bad95"}],"remediation":[],"revision":"9def926948959d1c7606fa9dde7242dd7d3abcf80040e26b8687c0ca495f549e","sources":[{"modifiedAt":1793729739353,"name":"NVD","retrievedAt":1793729788768,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64570"}],"ssvc":{"assessedAt":1792165383870,"automatable":"no","exploitation":"none","source":"NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0","technicalImpact":"total"},"status":"published","title":"CVE-2026-64570","updatedAt":1793729788768}