{
  "affected": [
    {
      "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": "7.2.10-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  serial: core: fix NULL pointer dereference in serial_core_unregister_port()  port-\u003eport_dev is NULL when no port device is installed: it is cleared on teardown, and never set if registration failed before serial_core_port_device_add().  serial_core_unregister_port() passes it straight to serial_core_get_ctrl_dev(), which dereferences it:    KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]   RIP: serial_core_unregister_port   Call Trace:    serial8250_unregister_port    serial8250_remove    unbind_store  Return early when there is no port device, and read port-\u003eport_dev under port_mutex.  Also clear port-\u003eport_dev on the serial_core_register_port() error path, where the port device has already been removed.",
  "id": "DEBIAN-CVE-2026-98747",
  "modified": "2026-10-19T04:47:36.156308308Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98747"
    }
  ],
  "upstream": [
    "CVE-2026-98747"
  ]
}