{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "84a9582fd203063cd4d301204971ff2cd8327f1a"
            },
            {
              "fixed": "54abbb862366dcaf1f22f1e968358147b7d0547d"
            },
            {
              "fixed": "499485a67fbacf4d9afbdb43522388c64f853428"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.5.0"
            },
            {
              "fixed": "7.2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98747.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: fix NULL pointer dereference in serial_core_unregister_port()\n\nport-\u003eport_dev is NULL when no port device is installed: it is cleared\non teardown, and never set if registration failed before\nserial_core_port_device_add().  serial_core_unregister_port() passes it\nstraight to serial_core_get_ctrl_dev(), which dereferences it:\n\n  KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]\n  RIP: serial_core_unregister_port\n  Call Trace:\n   serial8250_unregister_port\n   serial8250_remove\n   unbind_store\n\nReturn early when there is no port device, and read port-\u003eport_dev\nunder port_mutex.\n\nAlso clear port-\u003eport_dev on the serial_core_register_port() error\npath, where the port device has already been removed.",
  "id": "CVE-2026-98747",
  "modified": "2026-10-20T02:30:57.834655542Z",
  "published": "2026-10-18T15:47:32.607Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/499485a67fbacf4d9afbdb43522388c64f853428"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54abbb862366dcaf1f22f1e968358147b7d0547d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98747.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98747"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "serial: core: fix NULL pointer dereference in serial_core_unregister_port()"
}