CVE-2026-43119

{"id": "CVE-2026-43119", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43119", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:28:43.636559Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0", "lessThan": "ff5855e8891e1e2490741366d087fd2fbcaabc4a", "versionType": "git"}, {"status": "affected", "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0", "lessThan": "e51042ddc0b20d9bda5eb6dcf85a2668f9c5dae4", "versionType": "git"}, {"status": "affected", "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0", "lessThan": "6e539907c0d11f514c5e0b049b27b04dff48a5b1", "versionType": "git"}, {"status": "affected", "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0", "lessThan": "a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27", "versionType": "git"}, {"status": "affected", "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0", "lessThan": "40734ce8efc34c4a0d0222855798c0dc14b65f2e", "versionType": "git"}, {"status": "affected", "version": "f80c5dad7b6467b884c445ffea45985793b4b2d0", "lessThan": "b6807cfc195ef99e1ac37b2e1e60df40295daa8c", "versionType": "git"}, {"status": "affected", "version": "8603d49906b231bbcd9141db7d096fa1041bc379", "versionType": "git"}, {"status": "affected", "version": "0e061885bfcd65ef5d09f154f3c3c3491cc7544a", "versionType": "git"}, {"status": "affected", "version": "a3d50fb7ce931f08a2c6194fdc4c9a56c9ed4153", "versionType": "git"}, {"status": "affected", "version": "4.19.47", "lessThan": "4.20", "versionType": "semver"}, {"status": "affected", "version": "5.0.20", "lessThan": "5.1", "versionType": "semver"}, {"status": "affected", "version": "5.1.6", "lessThan": "5.2", "versionType": "semver"}], "programFiles": ["net/bluetooth/hci_conn.c", "net/bluetooth/hci_core.c", "net/bluetooth/hci_sync.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.2"}, {"status": "unaffected", "version": "0", "lessThan": "5.2", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.83", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.24", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.14", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/bluetooth/hci_conn.c", "net/bluetooth/hci_core.c", "net/bluetooth/hci_sync.c"], "defaultStatus": "affected"}]}], "published": "2026-05-06T10:16:25.773", "references": [{"url": "https://git.kernel.org/stable/c/40734ce8efc34c4a0d0222855798c0dc14b65f2e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6e539907c0d11f514c5e0b049b27b04dff48a5b1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b6807cfc195ef99e1ac37b2e1e60df40295daa8c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e51042ddc0b20d9bda5eb6dcf85a2668f9c5dae4", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ff5855e8891e1e2490741366d087fd2fbcaabc4a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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)."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nBluetooth: hci_sync: anotar condiciones de carrera de datos alrededor de hdev -> req_status\n\n__hci_cmd_sync_sk() establece hdev -> req_status bajo hdev -> req_lock:\n\n hdev -> req_status = HCI_REQ_PEND;\n\nSin embargo, varias otras funciones leen o escriben hdev -> req_status sin mantener ning\u00fan bloqueo:\n\n - hci_send_cmd_sync() lee req_status en hci_cmd_work (workqueue)\n - hci_cmd_sync_complete() lee/escribe desde la finalizaci\u00f3n del evento HCI\n - hci_cmd_sync_cancel() / hci_cmd_sync_cancel_sync() leen/escriben\n - hci_abort_conn() lee en la ruta de aborto de conexi\u00f3n\n\nDado que __hci_cmd_sync_sk() se ejecuta en hdev -> req_workqueue mientras que hci_send_cmd_sync() se ejecuta en hdev -> workqueue, estas son diferentes workqueues que pueden ejecutarse concurrentemente en diferentes CPUs. Los accesos C simples constituyen una condici\u00f3n de carrera de datos.\n\nA\u00f1adir anotaciones READ_ONCE()/WRITE_ONCE() en todos los accesos concurrentes a hdev -> req_status para prevenir posibles optimizaciones del compilador que podr\u00edan afectar la correcci\u00f3n (p. ej., fusi\u00f3n de cargas en la condici\u00f3n wait_event o reordenamiento de almacenamiento)."}], "lastModified": "2026-11-11T21:10:00.200", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A02C7C65-4552-4547-B8B4-46A1AD0890F3", "versionEndExcluding": "6.12.83", "versionStartIncluding": "5.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8126B8B8-6D0B-4443-86C1-672AEE893555", "versionEndExcluding": "6.18.24", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D6A8A074-BBF4-4803-ABED-519A839435BB", "versionEndExcluding": "6.19.14", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}