{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-43119",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-01T14:12:55.987Z",
        "datePublished": "2026-05-06T07:40:43.257Z",
        "dateUpdated": "2026-07-24T14:33:34.175Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-07-24T14:33:34.175Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: annotate data-races around hdev->req_status\n\n__hci_cmd_sync_sk() sets hdev->req_status under hdev->req_lock:\n\n    hdev->req_status = HCI_REQ_PEND;\n\nHowever, several other functions read or write hdev->req_status without\nholding any lock:\n\n  - hci_send_cmd_sync() reads req_status in hci_cmd_work (workqueue)\n  - hci_cmd_sync_complete() reads/writes from HCI event completion\n  - hci_cmd_sync_cancel() / hci_cmd_sync_cancel_sync() read/write\n  - hci_abort_conn() reads in connection abort path\n\nSince __hci_cmd_sync_sk() runs on hdev->req_workqueue while\nhci_send_cmd_sync() runs on hdev->workqueue, these are different\nworkqueues that can execute concurrently on different CPUs. The plain\nC accesses constitute a data race.\n\nAdd READ_ONCE()/WRITE_ONCE() annotations on all concurrent accesses\nto hdev->req_status to prevent potential compiler optimizations that\ncould affect correctness (e.g., load fusing in the wait_event\ncondition or store reordering)."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/bluetooth/hci_conn.c",
                        "net/bluetooth/hci_core.c",
                        "net/bluetooth/hci_sync.c"
                    ],
                    "versions": [
                        {
                            "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0",
                            "lessThan": "e51042ddc0b20d9bda5eb6dcf85a2668f9c5dae4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0",
                            "lessThan": "6e539907c0d11f514c5e0b049b27b04dff48a5b1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0",
                            "lessThan": "a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0",
                            "lessThan": "40734ce8efc34c4a0d0222855798c0dc14b65f2e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0",
                            "lessThan": "b6807cfc195ef99e1ac37b2e1e60df40295daa8c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8603d49906b231bbcd9141db7d096fa1041bc379",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0e061885bfcd65ef5d09f154f3c3c3491cc7544a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a3d50fb7ce931f08a2c6194fdc4c9a56c9ed4153",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4.19.47",
                            "lessThan": "4.20",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.0.20",
                            "lessThan": "5.1",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.1.6",
                            "lessThan": "5.2",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/bluetooth/hci_conn.c",
                        "net/bluetooth/hci_core.c",
                        "net/bluetooth/hci_sync.c"
                    ],
                    "versions": [
                        {
                            "version": "5.2",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.2",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.83",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.24",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.14",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "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": "5.2",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.12.83"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.18.24"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "6.19.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.2",
                                    "versionEndExcluding": "7.0"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19.47"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.0.20"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.1.6"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e51042ddc0b20d9bda5eb6dcf85a2668f9c5dae4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6e539907c0d11f514c5e0b049b27b04dff48a5b1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27"
                },
                {
                    "url": "https://git.kernel.org/stable/c/40734ce8efc34c4a0d0222855798c0dc14b65f2e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b6807cfc195ef99e1ac37b2e1e60df40295daa8c"
                }
            ],
            "title": "Bluetooth: hci_sync: annotate data-races around hdev->req_status",
            "x_generator": {
                "engine": "bippy-1.2.0"
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    }
}