CVE-2026-53072
Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jun 24, 2026 |
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Affected Versions
Linux / Linux
70c464256310e1c3716099b9d02ece4169272f73 < 60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4 70c464256310e1c3716099b9d02ece4169272f73 < 9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e 70c464256310e1c3716099b9d02ece4169272f73 < c7777f534a8018ae4bb1c80d8925af4df588a314 70c464256310e1c3716099b9d02ece4169272f73 < 6b4d226d01ab7da0d2027a2a1e3a6079152e5065 70c464256310e1c3716099b9d02ece4169272f73 < 541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f 70c464256310e1c3716099b9d02ece4169272f73 < 385b2d0468a0871fc716c549fa3b0c257c7dbcb3 70c464256310e1c3716099b9d02ece4169272f73 < c27224daf0b08efbb2b24ed64b6139b294f5473a 70c464256310e1c3716099b9d02ece4169272f73 < 5c7209a341ff2ac338b2b0375c34a307b37c9ac2
Linux / Linux
3.17
References
git.kernel.org: https://git.kernel.org/stable/c/60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4 git.kernel.org: https://git.kernel.org/stable/c/9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e git.kernel.org: https://git.kernel.org/stable/c/c7777f534a8018ae4bb1c80d8925af4df588a314 git.kernel.org: https://git.kernel.org/stable/c/6b4d226d01ab7da0d2027a2a1e3a6079152e5065 git.kernel.org: https://git.kernel.org/stable/c/541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f git.kernel.org: https://git.kernel.org/stable/c/385b2d0468a0871fc716c549fa3b0c257c7dbcb3 git.kernel.org: https://git.kernel.org/stable/c/c27224daf0b08efbb2b24ed64b6139b294f5473a git.kernel.org: https://git.kernel.org/stable/c/5c7209a341ff2ac338b2b0375c34a307b37c9ac2