{"metadata": {"vulnerability": "CVE-2026-98870", "count": 27, "kinds": {"milestone": 7, "sighting": 1, "kev": 0, "other": 19}, "linked_omitted": 0}, "data": [{"timestamp": "2026-09-25T10:25:14.377Z", "date_only": false, "value": "2026-09-25T10:25:14.377Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-98870", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-23T11:37:07.113Z", "date_only": false, "value": "2026-10-23T11:37:07.113Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-98870", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-23T11:56:33.662Z", "date_only": false, "value": "2026-10-23T11:56:33.662896Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117490096087176723", "record": "CVE-2026-98870", "field": "creation_timestamp", "uuid": "764cfccb-9759-466a-affe-e0122bafa32e", "content": "CVE-2026-98870 ksmbd: remove stale channels from all sessions on teardown In the Linux kernel, the following vulnerability has been resolved:\nksmbd: remove stale channels from all sessions on teardown\nksmbd_sessions_deregister() removes a connection's channels from othersessions' channel lists only while conn->binding is still set:\n\tif (conn->binding) {\t\thash_for_each_safe(sessions_table, ...)\t\t\tksmbd_chann_del(conn, sess);\t}\nconn->binding is a transient flag: it is cleared once a bindingSESSION_SETUP completes, and also by a subsequent non-bindingSESSION_SETUP on the same connection (a reauthentication on a boundchannel, or a new SessionId==0 setup). A connection that has bound achannel into another session's ksmbd_chann_list and then clearsconn->binding leaves that channel behind when it disconnects: thechannel, whose chann->conn points at the now freed struct ksmbd_conn,stays on the owner session's list.\nWhen the owning connection later tears down, the second loopdereferences the stale channel:\n\txa_for_each(&sess->ksmbd_chann_list, chann_id, chann)\t\tif (chann->conn != conn)\t\t\tksmbd_conn_set_exiting(chann->conn);   /* freed */\nwhich is a use-after-free write into the freed ksmbd_conn (the samestale channel is also walked by show_proc_session() through /proc). Thesession is leaked as well, because its channel list never empties.\nRemove the conn->binding gate so a connection always removes itschannels from every session on teardown.\nhttps://www.cve.org/CVERecord?id=CVE-2026-98870https://git.kernel.org/stable/c/f8200bb4994e65a2e5c5b314789eeae39078619dhttps://git.kernel.org/stable/c/9cd6d714d3ca0cff296542dc989696884e41970fhttps://git.kernel.org/stable/c/b145f9b56c87f9c23ad5464ab0844dbc1de12b36https://git.kernel.org/stable/c/a15cae16f4432a5ad919ee633e31b07178492955https://git.kernel.org/stable/c/b10665730fbf6b5e45fe422badcbbc3f0df96ef5#kernel #Linux#CVE_2026_98870#bot", "url": "https://infosec.exchange/users/cve/statuses/117490096087176723"}, {"timestamp": "2026-10-23T12:18:00Z", "date_only": false, "value": "2026-10-23T12:18:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2026-98870", "record": "UBUNTU-CVE-2026-98870", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", 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