{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: eir: Fix OOB read in eir_get_service_data()  eir_get_service_data() walks the advertising data for a Service Data field with a matching UUID.  On a mismatch it advances:      eir += dlen;     eir_len -= dlen;  eir_get_data() reports dlen as the field's data length, but the field spans dlen + 2 bytes once its length and type bytes count, and more when non-Service-Data fields were skipped to reach it.  The pointer lands correctly on the next field.  eir_len does not, and the shortfall compounds across fields until eir_get_data() reads the length and type bytes of a \"field\" past the end of the buffer.  For an ISO broadcast sink that buffer is hcon-\u003ele_per_adv_data[], filled from the periodic advertising reports of a remote broadcaster.  A PA payload packed with mismatching Service Data fields walks off the array into the rest of struct hci_conn.  A drifted field that matches the BAA UUID puts those bytes in iso_pi(sk)-\u003ebase, where user space reads them back with getsockopt(BT_ISO_BASE).  Recompute eir_len from the end of the buffer each iteration.",
  "id": "DEBIAN-CVE-2026-89583",
  "modified": "2026-09-14T08:47:41.831494703Z",
  "published": "2026-09-11T20:19:42.660Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-89583"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-89583"
  ]
}