{"id":"CVE-2026-89583","revision":null,"records":[{"revision":"7fb45549985e4091aef21122a255ff90","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89583","aliases":[],"title":"Bluetooth: eir: Fix OOB read in eir_get_service_data()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: eir: Fix OOB read in eir_get_service_data()\n\neir_get_service_data() walks the advertising data for a Service Data\nfield with a matching UUID. On a mismatch it advances:\n\n eir += dlen;\n eir_len -= dlen;\n\neir_get_data() reports dlen as the field's data length, but the field\nspans dlen + 2 bytes once its length and type bytes count, and more\nwhen non-Service-Data fields were skipped to reach it. The pointer\nlands correctly on the next field. eir_len does not, and the shortfall\ncompounds across fields until eir_get_data() reads the length and type\nbytes of a \"field\" past the end of the buffer.\n\nFor an ISO broadcast sink that buffer is hcon->le_per_adv_data[], filled\nfrom the periodic advertising reports of a remote broadcaster. A PA\npayload packed with mismatching Service Data fields walks off the array\ninto the rest of struct hci_conn. A drifted field that matches the BAA\nUUID puts those bytes in iso_pi(sk)->base, where user space reads them\nback with getsockopt(BT_ISO_BASE).\n\nRecompute eir_len from the end of the buffer each iteration.","state":0,"publishedAt":"2026-09-11T19:44:49.094+00:00","modifiedAt":"2026-10-19T08:49:16.094+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/bluetooth/eir.c\"\n ],\n \"versions\": [\n {\n \"version\": \"8f9ae5b3ae80f168a6224529e3787f4fb27f299a\",\n \"lessThan\": \"b6902adf81ea2ce14b1040dd97b6980050a8125a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f9ae5b3ae80f168a6224529e3787f4fb27f299a\",\n \"lessThan\": \"1a28aae7f1fc8c06c0d02f153541be4fc7bacb74\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f9ae5b3ae80f168a6224529e3787f4fb27f299a\",\n \"lessThan\": \"815fc98c227a78cbd93d4c29f2833705b7c2bc0f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f9ae5b3ae80f168a6224529e3787f4fb27f299a\",\n \"lessThan\": \"c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f9ae5b3ae80f168a6224529e3787f4fb27f299a\",\n \"lessThan\": \"bb56e97bd67614238c1c0a4084704ccadbb875b4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8f9ae5b3ae80f168a6224529e3787f4fb27f299a\",\n \"lessThan\": \"4beb198bc59b242404a47c21990bc84165052c8a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"net/bluetooth/eir.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.19\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.19\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.188\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.157\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.109\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.50\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2.4\",\n \"lessThanOrEqual\": \"7.2.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.3\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","score":8.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/b6902adf81ea2ce14b1040dd97b6980050a8125a","https://git.kernel.org/stable/c/1a28aae7f1fc8c06c0d02f153541be4fc7bacb74","https://git.kernel.org/stable/c/815fc98c227a78cbd93d4c29f2833705b7c2bc0f","https://git.kernel.org/stable/c/c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50","https://git.kernel.org/stable/c/bb56e97bd67614238c1c0a4084704ccadbb875b4","https://git.kernel.org/stable/c/4beb198bc59b242404a47c21990bc84165052c8a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89583","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89583","identifiers":["CVE-2026-89583"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-b65807e0e646484b9fefabc66f786b9e","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T05:14:12.5678804+00:00","lastSuccessAt":"2026-11-09T05:14:12.6419872+00:00","error":null,"lastVerifiedAt":"2026-11-09T05:14:12.6419872+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T05:02:23.3236319+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T05:02:23.3236319+00:00","lastSuccessAt":"2026-11-09T05:02:23.4802497+00:00","error":null,"lastVerifiedAt":"2026-11-09T05:02:23.4802499+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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