{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8f9ae5b3ae80f168a6224529e3787f4fb27f299a"
            },
            {
              "fixed": "815fc98c227a78cbd93d4c29f2833705b7c2bc0f"
            },
            {
              "fixed": "c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50"
            },
            {
              "fixed": "bb56e97bd67614238c1c0a4084704ccadbb875b4"
            },
            {
              "fixed": "4beb198bc59b242404a47c21990bc84165052c8a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.19.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89583.json"
  },
  "details": "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-\u003ele_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)-\u003ebase, where user space reads them\nback with getsockopt(BT_ISO_BASE).\n\nRecompute eir_len from the end of the buffer each iteration.",
  "id": "CVE-2026-89583",
  "modified": "2026-09-13T03:30:40.646908975Z",
  "published": "2026-09-11T19:44:49.094Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4beb198bc59b242404a47c21990bc84165052c8a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/815fc98c227a78cbd93d4c29f2833705b7c2bc0f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb56e97bd67614238c1c0a4084704ccadbb875b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c21fa79301d7d6ac0a4ec6c51e8ba10beaa08c50"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89583.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89583"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Bluetooth: eir: Fix OOB read in eir_get_service_data()"
}