{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7c7e6c8924e7bf98db4e5b2edb202842003c00c2"
            },
            {
              "fixed": "9f67997353caa29c6a080789a1fb6e01fb50c118"
            },
            {
              "fixed": "49fa670efdfdd27e29145cbd2beef065c08717ef"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98883.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_port: recognize UPIO_AU\n\nMy MIPS Alchemy systems generate the following warning during\nprobe of the 8250 driver:\n\nWARNING: drivers/tty/serial/8250/8250_port.c:462 at set_io_from_upio+0xfc/0x124, CPU#0: swapper/0/1\nUnsupported UART type 4\n[...]\n[\u003c80521d40\u003e] set_io_from_upio+0xfc/0x124\n[\u003c80521dfc\u003e] serial8250_set_defaults+0x94/0xe0\n[\u003c80520fb4\u003e] serial8250_register_8250_port+0x288/0x51c\n[\u003c805214ec\u003e] serial8250_probe+0x160/0x1e8\n[\u003c8053b5f0\u003e] platform_probe+0x64/0x90\n\nThe least invasive fix is to recognize UPIO_AU (type 4) in set_io_from_upio()\nand do nothing, since all parameters have already been set up in\n8250_rt288x.c::au_platform_setup().\n\nRun-tested on Alchemy Au1300 platform.",
  "id": "CVE-2026-98883",
  "modified": "2026-10-28T02:31:14.979265282Z",
  "published": "2026-10-23T11:37:38.372Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49fa670efdfdd27e29145cbd2beef065c08717ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f67997353caa29c6a080789a1fb6e01fb50c118"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98883.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98883"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "serial: 8250_port: recognize UPIO_AU"
}