tty: serial: uartlite: register uart driver in init

{
  "id": "71f1676bcb7b145a98ce2f43cbc11e5850cdd64fd88f812727638309fa787899",
  "url": "https://osv.dev/vulnerability/CVE-2025-38262",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "tty: serial: uartlite: register uart driver in init",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: tty: serial: uartlite: register uart driver in init When two instances of uart devices are probing, a concurrency race can occur. If one thread calls uart_register_driver function, which first allocates and assigns memory to 'uart_state' member of uart_driver structure, the other instance can bypass uart driver registration and call ulite_assign. This calls uart_add_one_port, which expects the uart driver to be fully initialized. This leads to a kernel panic due to a null pointer dereference: [ 8.143581] BUG: kernel NULL pointer dereference, address: 00000000000002b8 [ 8.156982] #PF: supervisor write access in kernel mode [ 8.156984] #PF: error_code(0x0002) - not-present page [ 8.156986] PGD 0 P4D 0 ... [ 8.180668] RIP: 0010:mutex_lock+0x19/0x30 [ 8.188624] Call Trace: [ 8.188629] ? __die_body.cold+0x1a/0x1f [ 8.195260] ? page_fault_oops+0x15c/0x290 [ 8.209183] ? __irq_resolve_mapping+0x47/0x80 [ 8.209187] ? exc_page_fault+0x64/0x140 [ 8.209190] ? asm_exc_page_fault+0x22/0x30 [ 8.209196] ? mutex_lock+0x19/0x30 [ 8.223116] uart_add_one_port+0x60/0x440 [ 8.223122] ? proc_tty_register_driver+0x43/0x50 [ 8.223126] ? tty_register_driver+0x1ca/0x1e0 [ 8.246250] ulite_probe+0x357/0x4b0 [uartlite] To prevent it, move uart driver registration in to init function. This will ensure that uart_driver is always registered when probe function is called.",
    "evidence": "osv:CVE-2025-38262",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.296",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.187",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.143",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.96",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.36",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-38262",
      "aliases": [
        "CVE-2025-38262"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                {
                  "fixed": "5015eed450005bab6e5cb6810f7a62eab0434fc4"
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                {
                  "fixed": "9c905fdbba68a6d73d39a6b7de9b9f0d6c46df87"
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                {
                  "fixed": "6db06aaea07bb7c8e33a425cf7b98bf29ee6056e"
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                {
                  "fixed": "8e958d10dd0ce5ae674cce460db5c9ca3f25243b"
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                  "fixed": "685d29f2c5057b32c7b1b46f2a7d303b926c8f72"
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                  "fixed": "f5e4229d94792b40e750f30c92bcf7a3107c72ef"
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                {
                  "fixed": "6bd697b5fc39fd24e2aa418c7b7d14469f550a93"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38262.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "2.6.20"
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                {
                  "fixed": "5.4.296"
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            {
              "type": "ECOSYSTEM",
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                  "introduced": "6.7.0"
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                  "fixed": "6.12.36"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.13.0"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38262.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.023625222Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5015eed450005bab6e5cb6810f7a62eab0434fc4",
        "https://git.kernel.org/stable/c/685d29f2c5057b32c7b1b46f2a7d303b926c8f72",
        "https://git.kernel.org/stable/c/6bd697b5fc39fd24e2aa418c7b7d14469f550a93",
        "https://git.kernel.org/stable/c/6db06aaea07bb7c8e33a425cf7b98bf29ee6056e",
        "https://git.kernel.org/stable/c/8e958d10dd0ce5ae674cce460db5c9ca3f25243b",
        "https://git.kernel.org/stable/c/9c905fdbba68a6d73d39a6b7de9b9f0d6c46df87",
        "https://git.kernel.org/stable/c/f5e4229d94792b40e750f30c92bcf7a3107c72ef",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38262.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38262",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38262.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38262",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504054,
  "published_at": "2025-07-09T10:42:37.41+00:00"
}