Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER When protocol sets HCI_PROTO_DEFER, hci_conn_request_evt() calls hci_connect_cfm(conn) without hdev->lock. Generally hci_connect_cfm() assumes it is held, and if conn is deleted concurrently -> UAF. Only SCO and ISO set HCI_PROTO_DEFER and only for defer setup listen, and HCI_EV_CONN_REQUEST is not generated for ISO. In the non-deferred listening socket code paths, hci_connect_cfm(conn) is called with hdev->lock held. Fix by holding the lock.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 70c464256310e1c3716099b9d02ece4169272f73 to <60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4; 70c464256310e1c3716099b9d02ece4169272f73 to <9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e; 70c464256310e1c3716099b9d02ece4169272f73 to <c7777f534a8018ae4bb1c80d8925af4df588a314; 70c464256310e1c3716099b9d02ece4169272f73 to <6b4d226d01ab7da0d2027a2a1e3a6079152e5065; 70c464256310e1c3716099b9d02ece4169272f73 to <541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f; 70c464256310e1c3716099b9d02ece4169272f73 to <385b2d0468a0871fc716c549fa3b0c257c7dbcb3; 70c464256310e1c3716099b9d02ece4169272f73 to <c27224daf0b08efbb2b24ed64b6139b294f5473a; 70c464256310e1c3716099b9d02ece4169272f73 to <5c7209a341ff2ac338b2b0375c34a307b37c9ac2 |
| Linux | Linux | 3.17; 0 to <3.17; 5.10.258 to <=5.10.*; 5.15.209 to <=5.15.*; 6.1.175 to <=6.1.*; 6.6.141 to <=6.6.*; 6.12.91 to <=6.12.*; 6.18.33 to <=6.18.*; 7.0.10 to <=7.0.*; 7.1 to <=* |
References
- https://git.kernel.org/stable/c/60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4
- https://git.kernel.org/stable/c/9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e
- https://git.kernel.org/stable/c/c7777f534a8018ae4bb1c80d8925af4df588a314
- https://git.kernel.org/stable/c/6b4d226d01ab7da0d2027a2a1e3a6079152e5065
- https://git.kernel.org/stable/c/541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f
- https://git.kernel.org/stable/c/385b2d0468a0871fc716c549fa3b0c257c7dbcb3
- https://git.kernel.org/stable/c/c27224daf0b08efbb2b24ed64b6139b294f5473a
- https://git.kernel.org/stable/c/5c7209a341ff2ac338b2b0375c34a307b37c9ac2
Generated from the official CVE List on 25 Jun 2026 10:14 UTC.