{"api_version":"1","generated_at":"2026-09-13T05:43:59+00:00","cve":"CVE-2026-89583","urls":{"html":"https://cve.report/CVE-2026-89583","api":"https://cve.report/api/cve/CVE-2026-89583.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89583","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89583"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:42","updated_at":"2026-09-11 20:19:42"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/815fc98c227a78cbd93d4c29f2833705b7c2bc0f","name":"https://git.kernel.org/stable/c/815fc98c227a78cbd93d4c29f2833705b7c2bc0f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4beb198bc59b242404a47c21990bc84165052c8a","name":"https://git.kernel.org/stable/c/4beb198bc59b242404a47c21990bc84165052c8a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50","name":"https://git.kernel.org/stable/c/c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bb56e97bd67614238c1c0a4084704ccadbb875b4","name":"https://git.kernel.org/stable/c/bb56e97bd67614238c1c0a4084704ccadbb875b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89583","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89583","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a 815fc98c227a78cbd93d4c29f2833705b7c2bc0f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a bb56e97bd67614238c1c0a4084704ccadbb875b4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8f9ae5b3ae80f168a6224529e3787f4fb27f299a 4beb198bc59b242404a47c21990bc84165052c8a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"89583","cve":"CVE-2026-89583","epss":"0.001680000","percentile":"0.063330000","score_date":"2026-09-12","updated_at":"2026-09-13 00:08:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/eir.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"815fc98c227a78cbd93d4c29f2833705b7c2bc0f","status":"affected","version":"8f9ae5b3ae80f168a6224529e3787f4fb27f299a","versionType":"git"},{"lessThan":"c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50","status":"affected","version":"8f9ae5b3ae80f168a6224529e3787f4fb27f299a","versionType":"git"},{"lessThan":"bb56e97bd67614238c1c0a4084704ccadbb875b4","status":"affected","version":"8f9ae5b3ae80f168a6224529e3787f4fb27f299a","versionType":"git"},{"lessThan":"4beb198bc59b242404a47c21990bc84165052c8a","status":"affected","version":"8f9ae5b3ae80f168a6224529e3787f4fb27f299a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/eir.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.19"},{"lessThan":"5.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"5.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:44:49.094Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/815fc98c227a78cbd93d4c29f2833705b7c2bc0f"},{"url":"https://git.kernel.org/stable/c/c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50"},{"url":"https://git.kernel.org/stable/c/bb56e97bd67614238c1c0a4084704ccadbb875b4"},{"url":"https://git.kernel.org/stable/c/4beb198bc59b242404a47c21990bc84165052c8a"}],"title":"Bluetooth: eir: Fix OOB read in eir_get_service_data()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89583","datePublished":"2026-09-11T19:44:49.094Z","dateReserved":"2026-09-11T19:38:34.728Z","dateUpdated":"2026-09-11T19:44:49.094Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:42","lastModifiedDate":"2026-09-11 20:19:42","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89583","Ordinal":"1","Title":"Bluetooth: eir: Fix OOB read in eir_get_service_data()","CVE":"CVE-2026-89583","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89583","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Bluetooth: eir: Fix OOB read in eir_get_service_data()"}]}}}