{"id":"CVE-2026-98290","revision":"93a9e8b4246e43b3a7b3edc478eba088","records":[{"revision":"93a9e8b4246e43b3a7b3edc478eba088","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98290","aliases":[],"title":"Bluetooth: RFCOMM: avoid socket lock inversion in listener cleanup","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: RFCOMM: avoid socket lock inversion in listener cleanup\n\nrfcomm_sock_cleanup_listen() closes unaccepted child sockets through\nrfcomm_sock_close(), which takes the child socket lock before\nrfcomm_dlc_close() acquires rfcomm_mutex. The RFCOMM worker takes these\nlocks in reverse order while handling connections and DLC state changes,\nso lockdep reports a possible deadlock.\n\nClose dequeued children without taking their socket lock. The accept queue\nowns a reference to each child, and bt_accept_dequeue() locks the child\nwhile unlinking it and clearing its parent pointer.\n\nDropping the child lock makes it important to prevent a concurrent\nrfcomm_connect_ind() from enqueueing a new child after cleanup observes an\nempty queue. Set a listening socket to BT_CLOSED while its lock is still\nheld, before dropping the lock and draining the queue. The state check in\nrfcomm_connect_ind() then rejects new children once cleanup starts.","state":0,"publishedAt":"2026-10-06T08:45:50.299+00:00","modifiedAt":"2026-10-19T09:17:01.498+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/bluetooth/rfcomm/sock.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b7ce436a5d798bc59e71797952566608a4b4626b\",\n                            \"lessThan\": \"eb4adaa46e4c9e6efa7be3ce06398f4d7c39b57c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7ce436a5d798bc59e71797952566608a4b4626b\",\n                            \"lessThan\": \"4aafb47301a799d3e01230d6568c4e93524e1523\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7ce436a5d798bc59e71797952566608a4b4626b\",\n                            \"lessThan\": \"c741977e413f5b49d306700820fb55ccb8269f5a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7ce436a5d798bc59e71797952566608a4b4626b\",\n                            \"lessThan\": \"c6792c441767256030606eb82dca5d5fc360dd9a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7ce436a5d798bc59e71797952566608a4b4626b\",\n                            \"lessThan\": \"bfce253f039eb5f58b810af267942a9f59207254\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7ce436a5d798bc59e71797952566608a4b4626b\",\n                            \"lessThan\": \"18174b166547ef41973cc19feb5ef9cab39a8def\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b7ce436a5d798bc59e71797952566608a4b4626b\",\n                            \"lessThan\": \"801fb950cae7048eb7d83b18857d1ca37b8cd5a4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/bluetooth/rfcomm/sock.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/eb4adaa46e4c9e6efa7be3ce06398f4d7c39b57c","https://git.kernel.org/stable/c/4aafb47301a799d3e01230d6568c4e93524e1523","https://git.kernel.org/stable/c/c741977e413f5b49d306700820fb55ccb8269f5a","https://git.kernel.org/stable/c/c6792c441767256030606eb82dca5d5fc360dd9a","https://git.kernel.org/stable/c/bfce253f039eb5f58b810af267942a9f59207254","https://git.kernel.org/stable/c/18174b166547ef41973cc19feb5ef9cab39a8def","https://git.kernel.org/stable/c/801fb950cae7048eb7d83b18857d1ca37b8cd5a4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98290","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98290","identifiers":["CVE-2026-98290"]},"retained":false,"historicalAffected":[]}],"coverage":[]}