{"id":"CVE-2026-74530","revision":"402bdaa770344361b3cd7057e4203f8c","records":[{"revision":"402bdaa770344361b3cd7057e4203f8c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74530","aliases":[],"title":"Bluetooth: hci_sync: hold conn in hci_connect_big_sync() callback","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: hold conn in hci_connect_big_sync() callback\n\nThere is theoretical UAF if the conn is freed while the hci_sync task is\nrunning.\n\nHold refcount to avoid that. Handle NULL hcon, return 0 + do nothing to\nmatch the previous behavior.","state":0,"publishedAt":"2026-08-15T12:27:45.381+00:00","modifiedAt":"2026-10-21T12:45:48.364+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\": \"620810ac1f7f1133a9ac403e132b3ad6995ddf39\",\n                            \"lessThan\": \"117d8bcaf1abc348185e8ab6a4ba9f8f516849a0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"024421cf39923927ab2b5fe895d1d922b9abe67f\",\n                            \"lessThan\": \"ff5625d27415ace5667bf87ebc16c3a0a98db22f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"024421cf39923927ab2b5fe895d1d922b9abe67f\",\n                            \"lessThan\": \"2d91e6244b69d752503b2d44020d8b0e323dbd38\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"024421cf39923927ab2b5fe895d1d922b9abe67f\",\n                            \"lessThan\": \"56e78b670356caab0b607e8aad4cf819a1909d07\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ee0586ad64a805eaf1a9a10100e908627a561e34\",\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\": \"6.18.57\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\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/117d8bcaf1abc348185e8ab6a4ba9f8f516849a0","https://git.kernel.org/stable/c/ff5625d27415ace5667bf87ebc16c3a0a98db22f","https://git.kernel.org/stable/c/2d91e6244b69d752503b2d44020d8b0e323dbd38","https://git.kernel.org/stable/c/56e78b670356caab0b607e8aad4cf819a1909d07"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74530","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74530","identifiers":["CVE-2026-74530"]},"retained":false,"historicalAffected":[]}],"coverage":[]}