{"id":"CVE-2026-68393","revision":"874d9ada972444378f6a72cdf6a9b054","records":[{"revision":"874d9ada972444378f6a72cdf6a9b054","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68393","aliases":[],"title":"Bluetooth: hci_sync: extend conn_hash lookup critical sections","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: extend conn_hash lookup critical sections\n\nUsing RCU-protected pointers outside the critical sections without\nrefcount is incorrect and may result to UAF.\n\nExtend critical section to cover both hci_conn_hash lookup and use of\nthe returned conn.\n\nAdd surrounding rcu_read_lock() also when return value is not used, in\npreparation for RCU lockdep requirement to hci_lookup_le_connect().\n\nThis avoids concurrent deletion of the conn before we are done\ndereferencing it.\n\nAlso, make sure to hold hdev->lock when accessing hdev->accept_list.","state":0,"publishedAt":"2026-08-10T12:04:12.564+00:00","modifiedAt":"2026-10-21T12:43:55.492+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_sync.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"eb8b860e87b296bd1874c79a668081efd00f9754\",\n                            \"lessThan\": \"3f98e7f38e1bb761a9964a8851f9c08e9c23b3dd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6d0417e4e1cf66fd917f06f0454958362714ef7d\",\n                            \"lessThan\": \"83b7e67698d0b93f685875ce82c8d335436834f7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6d0417e4e1cf66fd917f06f0454958362714ef7d\",\n                            \"lessThan\": \"38326774df6198df0cc2744cc73bf77cb741c538\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6d0417e4e1cf66fd917f06f0454958362714ef7d\",\n                            \"lessThan\": \"d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"94bf6380e936339a700c0b3171a49baf512aa70b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.12.28\",\n                            \"lessThan\": \"6.12.114\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.14.6\",\n                            \"lessThan\": \"6.15\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\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_sync.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\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/3f98e7f38e1bb761a9964a8851f9c08e9c23b3dd","https://git.kernel.org/stable/c/83b7e67698d0b93f685875ce82c8d335436834f7","https://git.kernel.org/stable/c/38326774df6198df0cc2744cc73bf77cb741c538","https://git.kernel.org/stable/c/d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68393","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68393","identifiers":["CVE-2026-68393"]},"retained":false,"historicalAffected":[]}],"coverage":[]}