{"id":"CVE-2026-43119","summary":"Bluetooth: hci_sync: annotate data-races around hdev-\u003ereq_status","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: annotate data-races around hdev-\u003ereq_status\n\n__hci_cmd_sync_sk() sets hdev-\u003ereq_status under hdev-\u003ereq_lock:\n\n    hdev-\u003ereq_status = HCI_REQ_PEND;\n\nHowever, several other functions read or write hdev-\u003ereq_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-\u003ereq_workqueue while\nhci_send_cmd_sync() runs on hdev-\u003eworkqueue, 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-\u003ereq_status to prevent potential compiler optimizations that\ncould affect correctness (e.g., load fusing in the wait_event\ncondition or store reordering).","modified":"2026-11-01T02:30:37.187069630Z","published":"2026-05-06T07:40:43.257Z","related":["SUSE-SU-2026:22433-1","SUSE-SU-2026:22436-1","SUSE-SU-2026:22458-1","SUSE-SU-2026:22460-1","SUSE-SU-2026:22742-1","SUSE-SU-2026:22769-1","SUSE-SU-2026:22812-1","SUSE-SU-2026:22835-1","SUSE-SU-2026:2722-1","SUSE-SU-2026:2799-1","openSUSE-SU-2026:21388-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43119.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/40734ce8efc34c4a0d0222855798c0dc14b65f2e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e539907c0d11f514c5e0b049b27b04dff48a5b1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b6807cfc195ef99e1ac37b2e1e60df40295daa8c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e51042ddc0b20d9bda5eb6dcf85a2668f9c5dae4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ff5855e8891e1e2490741366d087fd2fbcaabc4a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43119.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43119"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f80c5dad7b6467b884c445ffea45985793b4b2d0"},{"fixed":"ff5855e8891e1e2490741366d087fd2fbcaabc4a"},{"fixed":"e51042ddc0b20d9bda5eb6dcf85a2668f9c5dae4"},{"fixed":"6e539907c0d11f514c5e0b049b27b04dff48a5b1"},{"fixed":"a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27"},{"fixed":"40734ce8efc34c4a0d0222855798c0dc14b65f2e"},{"fixed":"b6807cfc195ef99e1ac37b2e1e60df40295daa8c"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.19.47"},{"fixed":"4.20"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.0.20"},{"fixed":"5.1"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.1.6"},{"fixed":"5.2"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8603d49906b231bbcd9141db7d096fa1041bc379"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0e061885bfcd65ef5d09f154f3c3c3491cc7544a"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a3d50fb7ce931f08a2c6194fdc4c9a56c9ed4153"}]}],"versions":["v4.19.325","v4.19.324","v4.19.323","v4.19.322","v4.19.321","v4.19.320","v4.19.319","v4.19.318","v4.19.317","v4.19.316","v4.19.315","v4.19.314","v4.19.313","v4.19.312","v4.19.311","v4.19.310","v4.19.309","v4.19.308","v4.19.307","v4.19.306","v4.19.305","v4.19.304","v4.19.303","v4.19.302","v4.19.301","v4.19.300","v4.19.299","v4.19.298","v4.19.297","v4.19.296","v4.19.295","v4.19.294","v4.19.293","v4.19.292","v4.19.291","v4.19.290","v4.19.289","v4.19.288","v4.19.287","v4.19.286","v4.19.285","v4.19.284","v4.19.283","v4.19.282","v4.19.281","v4.19.280","v4.19.279","v4.19.278","v4.19.277","v4.19.276","v4.19.275","v4.19.274","v4.19.273","v4.19.272","v4.19.271","v4.19.270","v4.19.269","v4.19.268","v4.19.267","v4.19.266","v4.19.265","v4.19.264","v4.19.263","v4.19.262","v4.19.261","v4.19.260","v4.19.259","v4.19.258","v4.19.257","v4.19.256","v4.19.255","v4.19.254","v4.19.253","v4.19.252","v4.19.251","v4.19.250","v4.19.249","v4.19.248","v4.19.247","v4.19.246","v4.19.245","v4.19.244","v4.19.243","v4.19.242","v4.19.241","v4.19.240","v4.19.239","v4.19.238","v4.19.237","v4.19.236","v4.19.235","v4.19.234","v4.19.233","v4.19.232","v4.19.231","v4.19.230","v4.19.229","v4.19.228","v4.19.227","v4.19.226","v4.19.225","v4.19.224","v4.19.223","v4.19.222","v4.19.221","v4.19.220","v4.19.219","v4.19.218","v4.19.217","v4.19.216","v4.19.215","v4.19.214","v4.19.213","v4.19.212","v4.19.211","v4.19.210","v4.19.209","v4.19.208","v4.19.207","v4.19.206","v4.19.205","v4.19.204","v4.19.203","v4.19.202","v4.19.201","v4.19.200","v4.19.199","v4.19.198","v4.19.197","v4.19.196","v4.19.195","v4.19.194","v4.19.193","v4.19.192","v4.19.191","v4.19.190","v4.19.189","v4.19.188","v4.19.187","v4.19.186","v4.19.185","v4.19.184","v4.19.183","v4.19.182","v4.19.181","v4.19.180","v4.19.179","v4.19.178","v4.19.177","v4.19.176","v4.19.175","v4.19.174","v4.19.173","v4.19.172","v4.19.171","v4.19.170","v4.19.169","v4.19.168","v4.19.167","v4.19.166","v4.19.165","v4.19.164","v4.19.163","v4.19.162","v4.19.161","v4.19.160","v4.19.159","v4.19.158","v4.19.157","v4.19.156","v4.19.155","v4.19.154","v4.19.153","v4.19.152","v4.19.151","v4.19.150","v4.19.149","v4.19.148","v4.19.147","v4.19.146","v4.19.145","v4.19.144","v4.19.143","v4.19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