{
  "cveId": "CVE-2026-74534",
  "url": "https://patchblox.com/security/cve/CVE-2026-74534",
  "summary": "CVE-2026-74534 is fixed in 16 products on 1 platform, first by DEBIAN-CVE-2026-74534, released August 16, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: ISO: fix refcounting of iso_conn  iso...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: ISO: fix refcounting of iso_conn  iso_conn_del() and iso_chan_del() have a race that results to double-put of iso_conn:      [Task hdev-\u003Eworkqueue]         [Task 2]     iso_conn_del                   iso_chan_del       iso_conn_hold_unless_zero      iso_conn_lock       iso_conn_lock                  conn-\u003Esk = NULL                                      iso_conn_unlock       sk = iso_sock_hold(conn)  \u003C---------\u00B4       if (!sk) iso_conn_put          iso_conn_put       iso_conn_put /* UAF */  The extra put for !sk in iso_conn_del() is currently required since failing iso_chan_add() may leave iso_conn not associated with any sk.  Fix by having iso_pi(sk)-\u003Econn own refcount when non-NULL, so iso_conn_del does not need to put it.  Adjust the iso_conn_add() refcounting so that conn is put if it does not get associated with an sk.",
  "published": "2026-08-15T13:17:58Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00242,
  "epssPercentile": 0.15476,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}