{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.187-1"
            }
          ],
          "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"
            },
            {
              "fixed": "7.1.13-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  xhci: dbgtty: Fix unregister on tty_register_driver() failure  If tty_register_driver() fails, it drops the reference, but fails to set the global dbc_tty_driver to NULL, causing the unregister to be called again when module exits.  On module unload dbc_tty_exit() only gates its cleanup on the driver pointer being non-NULL, so it operates on the already-freed driver:      module_init(xhci_hcd_init)       xhci_hcd_init()         xhci_dbc_init()                       [return value ignored]           dbc_tty_init()             tty_register_driver() fails               tty_driver_kref_put()           -\u003e driver freed               (dbc_tty_driver left dangling)     ...     module_exit(xhci_hcd_fini)       xhci_hcd_fini()         xhci_dbc_exit()           dbc_tty_exit()             if (dbc_tty_driver)               -\u003e true (dangling)               tty_unregister_driver()         -\u003e use-after-free",
  "id": "DEBIAN-CVE-2026-80923",
  "modified": "2026-09-11T05:47:33.158104827Z",
  "published": "2026-09-09T17:17:47.507Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80923"
    }
  ],
  "upstream": [
    "CVE-2026-80923"
  ]
}