{
  "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: ISO: fix use-after-free of listener socket in iso_conn_ready  iso_conn_ready() looks up the BIS listener socket with iso_get_sock(), which takes a reference, and then, without re-checking its state, creates a child socket from it:      parent = iso_get_sock(hdev, ...);     if (!parent)         return;      lock_sock(parent);     sk = iso_sock_alloc(sock_net(parent), NULL, BTPROTO_ISO, ...);     ...     iso_chan_add(conn, sk, parent);     ...     release_sock(parent);     sock_put(parent);  If the listener socket is closed concurrently, between iso_get_sock() and lock_sock(), the reference taken by iso_get_sock() may be the last one: the close path drops the link-list reference, and once iso_conn_ready() drops its own reference at the end of the function the socket is freed.  The child socket, however, is already linked to the freed parent, and a later disconnect of the child runs iso_chan_del() -\u003e bt_accept_unlink(), which dereferences the dangling parent pointer into the freed accept queue (a use-after-free).  The same dangling pointer is also dereferenced through parent-\u003e***() in iso_chan_del().  Fix it the same way the connected (non-BIS) path was fixed in commit 0d255e63fcf3 (\"Bluetooth: ISO: hold sk properly in iso_conn_ready\"): after taking the socket lock, re-check that the parent is still a listening, alive socket, and bail out otherwise.",
  "id": "DEBIAN-CVE-2026-80914",
  "modified": "2026-09-15T08:47:34.046310125Z",
  "published": "2026-09-09T17:17:46.263Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80914"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-80914"
  ]
}