{"api_version":"1","generated_at":"2026-05-06T11:00:55+00:00","cve":"CVE-2026-43119","urls":{"html":"https://cve.report/CVE-2026-43119","api":"https://cve.report/api/cve/CVE-2026-43119.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43119","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43119"},"summary":{"title":"Bluetooth: hci_sync: annotate data-races around hdev->req_status","description":"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).","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 10:16:25","updated_at":"2026-05-06 10:16:25"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6e539907c0d11f514c5e0b049b27b04dff48a5b1","name":"https://git.kernel.org/stable/c/6e539907c0d11f514c5e0b049b27b04dff48a5b1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b6807cfc195ef99e1ac37b2e1e60df40295daa8c","name":"https://git.kernel.org/stable/c/b6807cfc195ef99e1ac37b2e1e60df40295daa8c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/40734ce8efc34c4a0d0222855798c0dc14b65f2e","name":"https://git.kernel.org/stable/c/40734ce8efc34c4a0d0222855798c0dc14b65f2e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27","name":"https://git.kernel.org/stable/c/a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43119","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43119","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 6e539907c0d11f514c5e0b049b27b04dff48a5b1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 40734ce8efc34c4a0d0222855798c0dc14b65f2e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 b6807cfc195ef99e1ac37b2e1e60df40295daa8c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.83 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.24 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.14 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/hci_conn.c","net/bluetooth/hci_core.c","net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6e539907c0d11f514c5e0b049b27b04dff48a5b1","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"40734ce8efc34c4a0d0222855798c0dc14b65f2e","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"b6807cfc195ef99e1ac37b2e1e60df40295daa8c","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/hci_conn.c","net/bluetooth/hci_core.c","net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.83","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.24","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.14","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.83","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.24","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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)."}],"providerMetadata":{"dateUpdated":"2026-05-06T07:40:43.257Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43119","datePublished":"2026-05-06T07:40:43.257Z","dateReserved":"2026-05-01T14:12:55.987Z","dateUpdated":"2026-05-06T07:40:43.257Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 10:16:25","lastModifiedDate":"2026-05-06 10:16:25","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43119","Ordinal":"1","Title":"Bluetooth: hci_sync: annotate data-races around hdev->req_status","CVE":"CVE-2026-43119","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43119","Ordinal":"1","NoteData":"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).","Type":"Description","Title":"Bluetooth: hci_sync: annotate data-races around hdev->req_status"}]}}}