{"id":"CVE-2026-90092","summary":"Bluetooth: L2CAP: reject accept queue add unless BT_LISTEN","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: reject accept queue add unless BT_LISTEN\n\nNew sk should not be added to parent socket accept queue after last\nl2cap_sock_cleanup_listen() has run in l2cap_sock_teardown_cb() and\nstate set to BT_CLOSED, as that can result to UAF on dereferencing the\ndangling parent reference.\n\nl2cap_sock_new_connection_cb() may race with parent l2cap_chan teardown,\ndue to chan-\u003estate accessed without consistent locking:\n\n  [Task 1]                           [Task 2]\n  l2cap_sock_release(parent)         l2cap_connect\n    l2cap_sock_shutdown                pchan = l2cap_global_chan_by_psm\n      l2cap_chan_lock(pchan)\n      l2cap_chan_close\n        l2cap_sock_teardown_cb\n          pchan-\u003estate = BT_CLOSED\n      l2cap_chan_unlock(pchan) ------\u003e l2cap_chan_lock(pchan)\n                                       l2cap_new_connection\n                                         l2cap_sock_new_connection_cb\n      l2cap_chan_lock(pchan) \u003c-------- l2cap_chan_unlock(pchan)\n      l2cap_sock_kill(parent)          /* bt_sk(sk)-\u003eparent dangling */\n\nFix by adding check for sk_state == BT_LISTEN after acquiring sk lock in\nl2cap_sock_new_connection_cb().  Add lock_sock() around sk_state writes\nwhere missing, to avoid data races.\n\nAlthough the data races on pchan-\u003estate should be fixed too, this\ndefensive sk_state check probably makes sense in any case.","modified":"2026-11-13T04:07:09.727482105Z","published":"2026-09-17T16:06:06.197Z","related":["SUSE-SU-2026:24550-1","SUSE-SU-2026:24619-1","SUSE-SU-2026:24643-1","SUSE-SU-2026:24648-1","SUSE-SU-2026:24651-1","SUSE-SU-2026:24662-1","SUSE-SU-2026:5091-1","SUSE-SU-2026:5121-1","openSUSE-SU-2026:11880-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90092.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2a3a27aaf19bf069720e024ce6fde54e6bf80df9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/491e4c60017969b053888029998d2a61f298986a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/87276dc15b559d32757a43b4415c8445fbae06c4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf61a65c6093970e3b50031c4b79ebf3bd411eba"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c47339e169bf4a0a4cfabb91351471f67744c2bc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d4bfa78fd67929b62b02013c107973e0c5b7aa9a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90092.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90092"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0c17c8832562b2aac288e89cefd0f46074f54bcb"},{"fixed":"bf61a65c6093970e3b50031c4b79ebf3bd411eba"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5105f3e6b2df619c635b5f6a49fac131a36c7952"},{"fixed":"491e4c60017969b053888029998d2a61f298986a"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c88c185ae0a1067823661b220aeea613df2c127b"},{"fixed":"2a3a27aaf19bf069720e024ce6fde54e6bf80df9"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1810e42ff6716f320c7269d5850eca48b07b7427"},{"fixed":"87276dc15b559d32757a43b4415c8445fbae06c4"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2ff1a41a912de8517b4482e946dd951b7d80edbf"},{"fixed":"c47339e169bf4a0a4cfabb91351471f67744c2bc"},{"fixed":"d4bfa78fd67929b62b02013c107973e0c5b7aa9a"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1b1c0da227bf63479bac9982fc8d12df9aaea0fb"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"85426e97dc72f2088ba6d27e74cd58c3fbd43e31"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a2dcf1a61d056aef15b63c6eae9441344d624389"}]}],"versions":["v6.1.187","v6.1.186","v6.1.185","v6.1.184","v6.1.183","v6.1.182","v6.1.181","v6.1.180","v6.1.179","v6.1.178","v6.1.177","v6.1.176","v6.1.175","v6.6.156","v6.6.155","v6.6.154","v6.6.153","v6.6.152","v6.6.151","v6.6.150","v6.6.149","v6.6.148","v6.6.147","v6.6.146","v6.6.145","v6.6.144","v6.6.143","v6.6.142","v6.6.141","v6.6.140","v6.12.109","v6.12.108","v6.12.107","v6.12.106","v6.12.105","v6.12.104","v6.12.103","v6.12.102","v6.12.101","v6.12.100","v6.12.99","v6.12.98","v6.12.97","v6.12.96","v6.12.95","v6.12.94","v6.12.93","v6.12.92","v6.12.91","v6.12.90","v6.12.89","v6.12.88","v6.18.51","v6.18.50","v6.18.49","v6.18.48","v6.18.47","v6.18.46","v6.18.45","v6.18.44","v6.18.43","v6.18.42","v6.18.41","v6.18.40","v6.18.39","v6.18.38","v6.18.37","v6.18.36","v6.18.35","v6.18.34","v6.18.33","v6.18.32","v6.18.31","v6.18.30","v5.10.274","v5.10.273","v5.10.272","v5.10.271","v5.10.270","v5.10.269","v5.10.268","v5.10.267","v5.10.266","v5.10.265","v5.10.264","v5.10.263","v5.10.262","v5.10.261","v5.10.260","v5.10.259","v5.10.258","v5.15.225","v5.15.224","v5.15.223","v5.15.222","v5.15.221","v5.15.220","v5.15.219","v5.15.218","v5.15.217","v5.15.216","v5.15.215","v5.15.214","v5.15.213","v5.15.212","v5.15.211","v5.15.210","v5.15.209","v7.0.14","v7.0.13","v7.0.12","v7.0.11","v7.0.10","v7.0.9","v7.0.8","v7.0.7"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-90092.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.10.258"},{"fixed":"5.11"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.15.209"},{"fixed":"5.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.1.175"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.6.140"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.12.88"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.18.30"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.0.7"},{"fixed":"7.1"}]},{"type":"ECOSYSTEM","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