{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "559c1e1e013437bf190469efbcbd8bc803285853"
            },
            {
              "fixed": "91b40862a02000f490b63f1d315be3ee31e83871"
            },
            {
              "fixed": "33c0ee18cf8665c974b00f4e0ba769fbc07efe10"
            },
            {
              "fixed": "54a62153c765cd24239cde1f2633f2a2fd005368"
            },
            {
              "fixed": "2aa2cde2cc79a79d8ea4a15be9f4a67fc528ae91"
            },
            {
              "fixed": "2c5d2d3c3f70cde2565d7b279b544893a2035842"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.2.0"
            },
            {
              "fixed": "6.6.151"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.103"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.44"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74575.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nthunderbolt: Prevent XDomain delayed work use-after-free on disconnect\n\ntb_xdp_handle_request() runs on system_wq and queues\nxd-\u003estate_work via queue_delayed_work() in three request handlers:\nPROPERTIES_CHANGED_REQUEST, UUID_REQUEST (via start_handshake),\nand LINK_STATE_CHANGE_REQUEST.  Similarly, update_xdomain() queues\nxd-\u003eproperties_changed_work when local properties change.\n\nConcurrently, tb_xdomain_remove() calls stop_handshake() which does\ncancel_delayed_work_sync() on both delayed works.  Later,\ntb_xdomain_unregister() calls device_unregister() which eventually\nfrees the xdomain.  Since commit 559c1e1e0134 (\"thunderbolt: Run\ntb_xdp_handle_request() in system workqueue\") moved the request\nhandler off tb-\u003ewq, the handler and the remove path are no longer\nserialized.  If queue_delayed_work() executes after\ncancel_delayed_work_sync() but before the xdomain is freed, the\ndelayed work fires on a freed object.\n\nAdd xd-\u003eremoving that tb_xdomain_remove() sets under xd-\u003elock\nbefore calling stop_handshake().  Each external queue site holds\nthe same lock and checks removing before calling\nqueue_delayed_work().  This provides the mutual exclusion needed:\neither the queue site acquires the lock first and queues work that\nthe subsequent cancel will see, or the remove path acquires the\nlock first and the queue site observes removing == true and skips\nthe queue.",
  "id": "CVE-2026-74575",
  "modified": "2026-08-17T03:36:26.796077539Z",
  "published": "2026-08-15T12:28:13.187Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2aa2cde2cc79a79d8ea4a15be9f4a67fc528ae91"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c5d2d3c3f70cde2565d7b279b544893a2035842"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33c0ee18cf8665c974b00f4e0ba769fbc07efe10"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54a62153c765cd24239cde1f2633f2a2fd005368"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91b40862a02000f490b63f1d315be3ee31e83871"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74575.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74575"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "thunderbolt: Prevent XDomain delayed work use-after-free on disconnect"
}