{
  "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: hci_sync: free the advertising instance on the failure and cancel paths  adv_timeout_expire() hands a kmalloc()ed instance byte to hci_cmd_sync_queue() with a NULL destroy callback, and only adv_timeout_expire_sync() frees it. That leaks on two paths:   - the return value is not checked, and hci_cmd_sync_queue() does not    take ownership when it fails (-ENETDOWN, -ENODEV, -ENOMEM);   - a cancelled entry is not released, as _hci_cmd_sync_cancel_entry()    does not free entry-\u003edata when there is no destroy callback.    hci_cmd_sync_clear() cancels every pending entry when the controller    is unregistered.  Free the buffer from a destroy callback, and in the caller when the entry could not be queued at all.",
  "id": "DEBIAN-CVE-2026-90254",
  "modified": "2026-09-18T04:47:37.779479568Z",
  "published": "2026-09-17T17:17:21.730Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-90254"
    }
  ],
  "upstream": [
    "CVE-2026-90254"
  ]
}