{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53072", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.383Z", "datePublished": "2026-06-24T16:30:13.570Z", "dateUpdated": "2026-08-05T12:33:06.917Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:33:06.917Z"}, "descriptions": [{"lang": "en", "value": "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->lock. Generally hci_connect_cfm()\nassumes it is held, and if conn is deleted concurrently -> 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->lock held.\n\nFix by holding the lock."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - The vulnerable path is reached through Bluetooth HCI connection request handling for incoming SCO/eSCO connections from a nearby Bluetooth peer, so exploitation requires adjacency to the target Bluetooth radio.\nAC:L - The attacker can repeatedly initiate deferred SCO/eSCO connection attempts and race connection teardown/cleanup; when uncertain for this race, the higher-severity low-complexity rating is appropriate.\nPR:N - The remote Bluetooth peer reaches the pre-authentication connection request path without local privileges or verified credentials; local deferred-listener configuration is an environmental precondition, not attacker privilege.\nUI:N - Once the target has a deferred SCO/eSCO listener, the attacker can trigger the vulnerable HCI event without requiring a victim to perform an action.\nS:U - The bug is in the kernel Bluetooth stack and impacts the same kernel security authority; it is not a VM, sandbox, or hardware boundary escape by itself.\nC:H - The flaw is a use-after-free of an hci_conn object, and kernel heap UAFs can be leveraged for memory disclosure primitives in a plausible exploitation scenario.\nI:H - The freed hci_conn contains pointers, callback state, and protocol data used by confirmation callbacks, making control-flow or arbitrary memory corruption a defensible high-integrity impact for a kernel UAF.\nA:H - Even without full exploitation, dereferencing a concurrently freed hci_conn can crash or destabilize the kernel, causing high availability impact."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/hci_event.c"], "versions": [{"version": "70c464256310e1c3716099b9d02ece4169272f73", "lessThan": "60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4", "status": "affected", "versionType": "git"}, {"version": "70c464256310e1c3716099b9d02ece4169272f73", "lessThan": "9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e", "status": "affected", "versionType": "git"}, {"version": "70c464256310e1c3716099b9d02ece4169272f73", "lessThan": "c7777f534a8018ae4bb1c80d8925af4df588a314", "status": "affected", "versionType": "git"}, {"version": "70c464256310e1c3716099b9d02ece4169272f73", "lessThan": "6b4d226d01ab7da0d2027a2a1e3a6079152e5065", "status": "affected", "versionType": "git"}, {"version": "70c464256310e1c3716099b9d02ece4169272f73", "lessThan": "541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f", "status": "affected", "versionType": "git"}, {"version": "70c464256310e1c3716099b9d02ece4169272f73", "lessThan": "385b2d0468a0871fc716c549fa3b0c257c7dbcb3", "status": "affected", "versionType": "git"}, {"version": "70c464256310e1c3716099b9d02ece4169272f73", "lessThan": "c27224daf0b08efbb2b24ed64b6139b294f5473a", "status": "affected", "versionType": "git"}, {"version": "70c464256310e1c3716099b9d02ece4169272f73", "lessThan": "5c7209a341ff2ac338b2b0375c34a307b37c9ac2", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/bluetooth/hci_event.c"], "versions": [{"version": "3.17", "status": "affected"}, {"version": "0", "lessThan": "3.17", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.1.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.6.141"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.12.91"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4"}, {"url": "https://git.kernel.org/stable/c/9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e"}, {"url": "https://git.kernel.org/stable/c/c7777f534a8018ae4bb1c80d8925af4df588a314"}, {"url": "https://git.kernel.org/stable/c/6b4d226d01ab7da0d2027a2a1e3a6079152e5065"}, {"url": "https://git.kernel.org/stable/c/541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f"}, {"url": "https://git.kernel.org/stable/c/385b2d0468a0871fc716c549fa3b0c257c7dbcb3"}, {"url": "https://git.kernel.org/stable/c/c27224daf0b08efbb2b24ed64b6139b294f5473a"}, {"url": "https://git.kernel.org/stable/c/5c7209a341ff2ac338b2b0375c34a307b37c9ac2"}], "title": "Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{"bugzilla": {"description": "kernel: Bluetooth: fix locking in hci_conn_request_evt() with HCI_PROTO_DEFER", "id": "2492408", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492408"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-364", "details": ["A flaw was found in the Linux kernel's Bluetooth subsystem. Improper handling of locking within the `hci_conn_request_evt()` function, particularly when the `HCI_PROTO_DEFER` protocol is active, can result in a Use-After-Free (UAF) vulnerability. This condition arises when a connection object is accessed after it has been deallocated, potentially allowing a local attacker to cause a system crash or execute arbitrary code."], "name": "CVE-2026-53072", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53072\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53072\nhttps://lore.kernel.org/linux-cve-announce/2026062405-CVE-2026-53072-8c50@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[70c464256310e1c3716099b9d02ece4169272f73,60e3f4ff02d1f2d55bfbf2ca32a97285a9771ee4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[70c464256310e1c3716099b9d02ece4169272f73,9d4a6c0f43fc5e4d4f062e8e450e5483eb74176e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[70c464256310e1c3716099b9d02ece4169272f73,c7777f534a8018ae4bb1c80d8925af4df588a314)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[70c464256310e1c3716099b9d02ece4169272f73,6b4d226d01ab7da0d2027a2a1e3a6079152e5065)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[70c464256310e1c3716099b9d02ece4169272f73,541d5bf9b5afaf41090b2a3aa7b47f2db2ff801f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[70c464256310e1c3716099b9d02ece4169272f73,385b2d0468a0871fc716c549fa3b0c257c7dbcb3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[70c464256310e1c3716099b9d02ece4169272f73,c27224daf0b08efbb2b24ed64b6139b294f5473a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[70c464256310e1c3716099b9d02ece4169272f73,5c7209a341ff2ac338b2b0375c34a307b37c9ac2)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.258,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.209,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.175,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.141,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.91,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.33,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.10,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-24T19:30:08.641013+00:00", "updated": "2026-06-28T14:30:07.136209+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}