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  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98388.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nexec: do_close_on_exec() before taking exec_update_lock\n\ndo_close_on_exec() currently happens while holding the exec_update_lock,\nwhich is used in a lot of places that access process state to\nsynchronize access checks.\nI recently added another such use of exec_update_lock, causing a\nregression.\n\ndo_close_on_exec() can block waiting for a reply from a filesystem.\nThat means a hung filesystem can block codepaths that use\nexec_update_lock; and it also means that a FUSE filesystem which\nattempts to inspect the calling process can deadlock.\n\nTo avoid such problems, move do_close_on_exec() before the\nexec_update_lock is taken, but after the FD table has been copied if\nnecessary.\n\nI have looked through all the calls between the old and new position of\nthe do_close_on_exec() call; there seems to be no file descriptor table\naccess in between.",
  "id": "CVE-2026-98388",
  "modified": "2026-10-15T02:30:39.202179483Z",
  "published": "2026-10-14T13:25:52.117Z",
  "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/0d86cd6b709c39216e6ee5ea8f0fc4242bbb2b53"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19ddef61ee0a49782a60f8f497e50597ad5de2da"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3feb4020bfb7ccf0d347f27051639d25e19cd65d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/550feab5b01000ab314868b62211fb3ddfd600e8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5aacc19ba2b1faf84c4a2f2cf9a1784e03d1ff38"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63be3d8511bdafa095cd14a393cbf3c58dbbb928"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/955973fff4a36d39a848b00cac1706863f568fe1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e780259b54e618ceb4763fbc21314acf3565e813"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98388.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98388"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "exec: do_close_on_exec() before taking exec_update_lock"
}