{"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":"2026-11-06T15:32:31.799Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:25:00.556Z"},"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":"ff5855e8891e1e2490741366d087fd2fbcaabc4a","status":"affected","versionType":"git"},{"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":"6.1.191","lessThanOrEqual":"6.1.*","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":"6.1.191"},{"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/ff5855e8891e1e2490741366d087fd2fbcaabc4a"},{"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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-43119","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-11-06T15:28:43.636559Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-06T15:32:31.799Z"}}]}}