{"id":"CVE-2026-53072","summary":"Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER\n\nWhen protocol sets HCI_PROTO_DEFER, hci_conn_request_evt() calls\nhci_connect_cfm(conn) without hdev-\u003elock. Generally hci_connect_cfm()\nassumes it is held, and if conn is deleted concurrently -\u003e UAF.\n\nOnly SCO and ISO set HCI_PROTO_DEFER and only for defer setup listen,\nand HCI_EV_CONN_REQUEST is not generated for ISO.  In the non-deferred\nlistening socket code paths, hci_connect_cfm(conn) is called with\nhdev-\u003elock held.\n\nFix by holding the lock.","modified":"2026-07-11T09:29:25.713709695Z","published":"2026-06-24T16:30:13.570Z","related":["SUSE-SU-2026:22521-1","SUSE-SU-2026:22522-1","SUSE-SU-2026:2799-1","SUSE-SU-2026:2800-1","SUSE-SU-2026:2840-1","SUSE-SU-2026:2841-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53072.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/385b2d0468a0871fc716c549fa3b0c257c7dbcb3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5c7209a341ff2ac338b2b0375c34a307b37c9ac2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b4d226d01ab7da0d2027a2a1e3a6079152e5065"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c27224daf0b08efbb2b24ed64b6139b294f5473a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c7777f534a8018ae4bb1c80d8925af4df588a314"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53072.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53072"},{"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":"70c464256310e1c3716099b9d02ece4169272f73"},{"fixed":"60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4"},{"fixed":"9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e"},{"fixed":"c7777f534a8018ae4bb1c80d8925af4df588a314"},{"fixed":"6b4d226d01ab7da0d2027a2a1e3a6079152e5065"},{"fixed":"541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f"},{"fixed":"385b2d0468a0871fc716c549fa3b0c257c7dbcb3"},{"fixed":"c27224daf0b08efbb2b24ed64b6139b294f5473a"},{"fixed":"5c7209a341ff2ac338b2b0375c34a307b37c9ac2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53072.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.17.0"},{"fixed":"5.10.258"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.141"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.91"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.33"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53072.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}