{"metadata": {"vulnerability": "CVE-2026-99117", "count": 36, "kinds": {"milestone": 11, "sighting": 1, "kev": 0, "other": 24}, "linked_omitted": 0}, "data": [{"timestamp": "2026-09-25T10:25:14.392Z", "date_only": false, "value": "2026-09-25T10:25:14.392Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-99117", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-28T10:34:33.874Z", "date_only": false, "value": "2026-10-28T10:34:33.874Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-99117", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-28T10:55:19.600Z", "date_only": false, "value": "2026-10-28T10:55:19.600643Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117518166854773202", "record": "CVE-2026-99117", "field": "creation_timestamp", "uuid": "67b3df54-8ebf-496b-ba59-7e0ede61e86d", "content": "CVE-2026-99117 net: bridge: mcast: don't truncate the port group walk on teardown In the Linux kernel, the following vulnerability has been resolved:\nnet: bridge: mcast: don't truncate the port group walk on teardown\n__br_multicast_disable_port_ctx() and br_multicast_del_port() walkport->mglist with hlist_for_each_entry_safe(). However,br_multicast_find_del_pg() can also delete other entries from the samelist through br_multicast_fwd_src_remove() or __fwd_del_star_excl().\nIf such an entry is the iterator's saved next node, hlist_del_init()clears its ->next and terminates the walk early. The reproducer triggersthis in both teardown walks, leaving port groups in the bridge mdb witha dangling ->key.port after del_nbp() frees the port:\n  BUG: KASAN: slab-use-after-free in __mdb_fill_info+0x1191/0x1320   __mdb_fill_info+0x1191/0x1320   br_mdb_dump+0x594/0xe40   rtnl_mdb_dump+0x1cf/0x5d0\nUse hlist_del_init_rcu() to unlink the group while preserving ->next.br_multicast_del_pg() and the teardown walks run underbr->multicast_lock. The GC worker must acquire the same lock beforedetaching the group for destruction, so the node remains alive whilethe walk uses the preserved pointer.\nPreserving ->next means a walk can now reach a group that an earlieriteration already deleted as a side effect. That group is off mp->ports,so br_multicast_find_del_pg() would fall through its port scan and hitthe trailing WARN_ON(1). Skip such groups at the top of that helper: aport group is put on port->mglist when it is created and only unlinkedwhen it is deleted, so hlist_unhashed() identifies exactly this case.\nhttps://www.cve.org/CVERecord?id=CVE-2026-99117https://git.kernel.org/stable/c/8243d587a081e790ad96e80d48eef44d9f7ef005https://git.kernel.org/stable/c/b45e8c24608c992d1e2cea047eb5bcbfa537f86bhttps://git.kernel.org/stable/c/5a3f7a683aee56e1f15c9d53041f3236767eaae7#kernel #Linux#CVE_2026_99117#bot", "url": "https://infosec.exchange/users/cve/statuses/117518166854773202"}, {"timestamp": "2026-10-28T11:17:00Z", "date_only": false, "value": "2026-10-28T11:17:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-99117", "record": "UBUNTU-CVE-2026-99117", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2026-10-28T11:17:31Z", "date_only": false, "value": "2026-10-28T11:17:31Z", "kind": "other", 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