{"api_version":"1","generated_at":"2026-10-26T08:55:59+00:00","cve":"CVE-2023-7356","urls":{"html":"https://cve.report/CVE-2023-7356","api":"https://cve.report/api/cve/CVE-2023-7356.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-7356","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-7356"},"summary":{"title":"Bluetooth: ISO: Copy BASE if service data matches EIR_BAA_SERVICE_UUID","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Copy BASE if service data matches EIR_BAA_SERVICE_UUID\n\nCopy the content of a Periodic Advertisement Report to BASE only if\nthe service UUID is Basic Audio Announcement Service UUID.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-21 15:17:12","updated_at":"2026-10-26 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-7356","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e4cfffb5ebc80820f46cf16a6fa5be1b436bdf2d ba25efe15e8fd909884e113a86c6ccd07d88256e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9c0826310bfb784c9bac7d1d9454e304185446c5 927ef409f713929dea2b9a5ed5bb65e712be0050 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 9c0826310bfb784c9bac7d1d9454e304185446c5 f4da3ee15de9944482382181329bb6d7335ca003 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1.159 6.1.178 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.7 * 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/iso.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ba25efe15e8fd909884e113a86c6ccd07d88256e","status":"affected","version":"e4cfffb5ebc80820f46cf16a6fa5be1b436bdf2d","versionType":"git"},{"lessThan":"927ef409f713929dea2b9a5ed5bb65e712be0050","status":"affected","version":"9c0826310bfb784c9bac7d1d9454e304185446c5","versionType":"git"},{"lessThan":"f4da3ee15de9944482382181329bb6d7335ca003","status":"affected","version":"9c0826310bfb784c9bac7d1d9454e304185446c5","versionType":"git"},{"lessThan":"6.1.178","status":"affected","version":"6.1.159","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/iso.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.7","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"6.1.159","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.7","versionStartIncluding":"6.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Copy BASE if service data matches EIR_BAA_SERVICE_UUID\n\nCopy the content of a Periodic Advertisement Report to BASE only if\nthe service UUID is Basic Audio Announcement Service UUID."}],"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"},"scenarios":[{"lang":"en","value":"AV:A - A BLE Periodic Advertising Report supplies ev3->length and ev3->data through hci_recv_frame()→hci_event_packet()→hci_le_per_adv_report_evt()→hci_proto_connect_ind()→iso_connect_ind(); exploitation therefore requires Bluetooth radio proximity.\nAC:L - A single matched report with length 251–255 overwrites padding and up to five low bytes of iso_pinfo.conn; iso_connect_ind() performs the memcpy deterministically, with no race or condition outside the broadcaster's control.\nPR:N - hci_le_per_adv_report_evt() performs no pairing, authentication, or authorization check before calling iso_connect_ind(); iso_match_sync_handle_pa_report() only matches the unauthenticated report to an existing periodic-advertising sync.\nUI:N - Once an ISO broadcast-sink listener is synchronized, receipt of the crafted periodic report invokes iso_connect_ind() automatically; no victim action is required for the overflowing report.\nS:U - The overwrite corrupts iso_pinfo and its iso_conn pointer within the same host kernel security authority; it does not cross a VM, IOMMU, or other security boundary.\nC:H - base[248] immediately precedes the live conn pointer, and the overflow can redirect later conn->hcon reads in iso_sock_get_qos() and related paths, providing exploitable kernel-pointer corruption capable of arbitrary memory disclosure.\nI:H - The unchecked memcpy() writes beyond iso_pinfo.base into low bytes of iso_pinfo.conn; subsequent writes and lock operations through that corrupted pointer in iso_chan_del() and timer helpers can enable arbitrary kernel-memory corruption or control-flow hijacking.\nA:H - A corrupted iso_pinfo.conn is dereferenced by iso_sock_clear_timer(), iso_sock_get_qos(), send, and close paths, allowing an unauthenticated broadcaster to trigger a kernel oops or panic."}]}],"providerMetadata":{"dateUpdated":"2026-10-26T06:55:41.493Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ba25efe15e8fd909884e113a86c6ccd07d88256e"},{"url":"https://git.kernel.org/stable/c/927ef409f713929dea2b9a5ed5bb65e712be0050"},{"url":"https://git.kernel.org/stable/c/f4da3ee15de9944482382181329bb6d7335ca003"}],"title":"Bluetooth: ISO: Copy BASE if service data matches EIR_BAA_SERVICE_UUID","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2023-7356","datePublished":"2026-10-21T14:59:38.724Z","dateReserved":"2026-10-21T14:57:20.443Z","dateUpdated":"2026-10-26T06:55:41.493Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-21 15:17:12","lastModifiedDate":"2026-10-26 07:17:05","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":"2023","CveId":"7356","Ordinal":"1","Title":"Bluetooth: ISO: Copy BASE if service data matches EIR_BAA_SERVIC","CVE":"CVE-2023-7356","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"7356","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Copy BASE if service data matches EIR_BAA_SERVICE_UUID\n\nCopy the content of a Periodic Advertisement Report to BASE only if\nthe service UUID is Basic Audio Announcement Service UUID.","Type":"Description","Title":"Bluetooth: ISO: Copy BASE if service data matches EIR_BAA_SERVIC"}]}}}