{"api_version":"1","generated_at":"2026-05-03T12:40:39+00:00","cve":"CVE-2026-43018","urls":{"html":"https://cve.report/CVE-2026-43018","api":"https://cve.report/api/cve/CVE-2026-43018.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43018","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43018"},"summary":{"title":"Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt\n\nhci_conn lookup and field access must be covered by hdev lock in\nhci_le_remote_conn_param_req_evt, otherwise it's possible it is freed\nconcurrently.\n\nExtend the hci_dev_lock critical section to cover all conn usage.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-01 15:16:45","updated_at":"2026-05-03 07:16:22"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19","name":"https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81","name":"https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20","name":"https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09","name":"https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c","name":"https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c","name":"https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43018","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43018","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 95118dd4edfec950898a00180c6f998df0a6406d 59eecf0ffde15670e6a5e10c47be67f73d843b20 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 95118dd4edfec950898a00180c6f998df0a6406d 5fb69e1eeea9d6cba80517e9f058b56b34bc3a81 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 95118dd4edfec950898a00180c6f998df0a6406d 7cadb03be37e761130edb153544fe0770a842b19 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 95118dd4edfec950898a00180c6f998df0a6406d 1d0bdbfe3e91c11f0a704c52443a9446a10d699c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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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":{"cve_year":"2026","cve_id":"43018","cve":"CVE-2026-43018","epss":"0.000240000","percentile":"0.068220000","score_date":"2026-05-02","updated_at":"2026-05-03 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the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt\n\nhci_conn lookup and field access must be covered by hdev lock in\nhci_le_remote_conn_param_req_evt, otherwise it's possible it is freed\nconcurrently.\n\nExtend the hci_dev_lock critical section to cover all conn usage."}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-05-03T05:46:05.696Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20"},{"url":"https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81"},{"url":"https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19"},{"url":"https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c"},{"url":"https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c"},{"url":"https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09"}],"title":"Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43018","datePublished":"2026-05-01T14:15:22.308Z","dateReserved":"2026-05-01T14:12:55.975Z","dateUpdated":"2026-05-03T05:46:05.696Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-01 15:16:45","lastModifiedDate":"2026-05-03 07:16:22","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43018","Ordinal":"1","Title":"Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_pa","CVE":"CVE-2026-43018","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43018","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt\n\nhci_conn lookup and field access must be covered by hdev lock in\nhci_le_remote_conn_param_req_evt, otherwise it's possible it is freed\nconcurrently.\n\nExtend the hci_dev_lock critical section to cover all conn usage.","Type":"Description","Title":"Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_pa"}]}}}