{"id":"CVE-2026-90255","revision":"b3dda54f05be44d390ce7802ed8ce896","records":[{"revision":"b3dda54f05be44d390ce7802ed8ce896","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90255","aliases":[],"title":"Bluetooth: hci_conn: fix the SCO setup context lifetime","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: fix the SCO setup context lifetime\n\nhci_setup_sync() queues a conn_handle_t with a NULL destroy callback, so\nthe context is only freed if hci_enhanced_setup_sync() actually runs. An\nentry that is cancelled instead is leaked, as\n_hci_cmd_sync_cancel_entry() does not release entry->data when there is\nno destroy callback, and hci_cmd_sync_clear() cancels every pending entry\nwhen the controller is unregistered.\n\nThe context also stores a bare hci_conn pointer, so the connection can be\nfreed while the work is queued. The dequeue in hci_conn_del() does not\ncover it either, as it matches on entry->data == conn and entry->data is\nthe wrapper here. Same problem as commit 2f5d635ad590 (\"Bluetooth:\nhci_sync: hold conn in hci_connect_acl/le_sync() callbacks\").\n\nHold the connection and release both from a destroy callback. The\nsubmission failure path drops both, since hci_cmd_sync_submit() does not\ncall the destroy callback when it fails to queue.","state":0,"publishedAt":"2026-09-17T16:07:54.775+00:00","modifiedAt":"2026-10-19T09:00:31.949+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/hci_conn.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e07a06b4eb417f5271d33ce2240e93c62d98b7b4\",\n                            \"lessThan\": \"37cfec41365c826d5496ef5d00c9e215eee53aa2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e07a06b4eb417f5271d33ce2240e93c62d98b7b4\",\n                            \"lessThan\": \"9a2ba69cebe3fc5a3d4fa8eaaad3c42862723c27\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e07a06b4eb417f5271d33ce2240e93c62d98b7b4\",\n                            \"lessThan\": \"a661de0ee29d0915c5e924edf91d2be2b4d35bae\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e07a06b4eb417f5271d33ce2240e93c62d98b7b4\",\n                            \"lessThan\": \"c1fe3c74a89a7749cba3caa0dd91236049c66116\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e07a06b4eb417f5271d33ce2240e93c62d98b7b4\",\n                            \"lessThan\": \"4d7b1c834d2775b73c65e4888e01f5af8b477fe9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e07a06b4eb417f5271d33ce2240e93c62d98b7b4\",\n                            \"lessThan\": \"42de40abe25db9211107af8896d0fd741f10648d\",\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/hci_conn.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.1\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\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:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/37cfec41365c826d5496ef5d00c9e215eee53aa2","https://git.kernel.org/stable/c/9a2ba69cebe3fc5a3d4fa8eaaad3c42862723c27","https://git.kernel.org/stable/c/a661de0ee29d0915c5e924edf91d2be2b4d35bae","https://git.kernel.org/stable/c/c1fe3c74a89a7749cba3caa0dd91236049c66116","https://git.kernel.org/stable/c/4d7b1c834d2775b73c65e4888e01f5af8b477fe9","https://git.kernel.org/stable/c/42de40abe25db9211107af8896d0fd741f10648d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90255","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90255","identifiers":["CVE-2026-90255"]},"retained":false,"historicalAffected":[]}],"coverage":[]}