Answer in brief
CVE-2026-53072 records a High severity (CVSS 8.8) vulnerability in Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-53072 records a High severity (CVSS 8.8) vulnerability in Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=70c464256310e1c3716099b9d02ece4169272f73 <60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4 || >=70c464256310e1c3716099b9d02ece4169272f73 <9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e || >=70c464256310e1c3716099b9d02ece4169272f73 <c7777f534a8018ae4bb1c80d8925af4df588a314 || >=70c464256310e1c3716099b9d02ece4169272f73 <6b4d226d01ab7da0d2027a2a1e3a6079152e5065 || >=70c464256310e1c3716099b9d02ece4169272f73 <541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f || >=70c464256310e1c3716099b9d02ece4169272f73 <385b2d0468a0871fc716c549fa3b0c257c7dbcb3 || >=70c464256310e1c3716099b9d02ece4169272f73 <c27224daf0b08efbb2b24ed64b6139b294f5473a || >=70c464256310e1c3716099b9d02ece4169272f73 <5c7209a341ff2ac338b2b0375c34a307b37c9ac2 | 60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4, 9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e, c7777f534a8018ae4bb1c80d8925af4df588a314, 6b4d226d01ab7da0d2027a2a1e3a6079152e5065, 541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f, 385b2d0468a0871fc716c549fa3b0c257c7dbcb3, c27224daf0b08efbb2b24ed64b6139b294f5473a, 5c7209a341ff2ac338b2b0375c34a307b37c9ac2 |
| Linux/Linuxgeneric | 3.17 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
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.
Quoted source text, attributed separately from HOL analysis.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=70c464256310e1c3716099b9d02ece4169272f73 <60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4 || >=70c464256310e1c3716099b9d02ece4169272f73 <9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e || >=70c464256310e1c3716099b9d02ece4169272f73 <c7777f534a8018ae4bb1c80d8925af4df588a314 || >=70c464256310e1c3716099b9d02ece4169272f73 <6b4d226d01ab7da0d2027a2a1e3a6079152e5065 || >=70c464256310e1c3716099b9d02ece4169272f73 <541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f || >=70c464256310e1c3716099b9d02ece4169272f73 <385b2d0468a0871fc716c549fa3b0c257c7dbcb3 || >=70c464256310e1c3716099b9d02ece4169272f73 <c27224daf0b08efbb2b24ed64b6139b294f5473a || >=70c464256310e1c3716099b9d02ece4169272f73 <5c7209a341ff2ac338b2b0375c34a307b37c9ac2 | 60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4, 9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e, c7777f534a8018ae4bb1c80d8925af4df588a314, 6b4d226d01ab7da0d2027a2a1e3a6079152e5065, 541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f, 385b2d0468a0871fc716c549fa3b0c257c7dbcb3, c27224daf0b08efbb2b24ed64b6139b294f5473a, 5c7209a341ff2ac338b2b0375c34a307b37c9ac2 |
| Linux/Linuxgeneric | 3.17 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
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.
Quoted source text, attributed separately from HOL analysis.