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        "name": "Kernel"
      },
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  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98175.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: cancel reconnect work in clean_demultiplex_info()\n\nclean_demultiplex_info() cancels server-\u003eecho delayed work but not\nserver-\u003ereconnect, which can cause a use-after-free when the\ndemultiplex thread exits while a reconnect work is still queued:\n\n  cifs_demultiplex_thread()\n    cifs_readv_from_socket()\n      cifs_reconnect()\n        __cifs_reconnect()\n          cifs_queue_server_reconn()\n            mod_delayed_work(cifsiod_wq, \u0026server-\u003ereconnect, 0)\n    clean_demultiplex_info()\n      cancel_delayed_work_sync(\u0026server-\u003eecho)   // echo canceled\n                                                 // reconnect NOT canceled\n      kfree_sensitive(server)                    // server freed\n\n  ...later, on cifsiod_wq:\n\n  smb2_reconnect_server()\n    server-\u003esrv_count  // UAF read of freed server\n\nFix this by canceling server-\u003ereconnect delayed work in\nclean_demultiplex_info() before the server is freed, the same way\ncifs_put_tcp_session() already does.",
  "id": "CVE-2026-98175",
  "modified": "2026-10-09T02:30:34.453958694Z",
  "published": "2026-10-06T08:44:19.155Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/180380272f116dbd2b0354c5c7872e112e519149"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e5103e11a17c274715dd56cf185eeedccf686b8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ab9ceedd860216fb97f2d8574cbe58b8906f42a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c65eae6f61d1778ff7a82e4aae4080e26f486af1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3f6a779433d13aafb5edab59e4f9313051e8a52"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98175.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98175"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "smb: client: cancel reconnect work in clean_demultiplex_info()"
}