{
  "cveId": "CVE-2026-99230",
  "url": "https://patchblox.com/security/cve/CVE-2026-99230",
  "summary": "CVE-2026-99230 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-99230, released November 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  io_uring/cmd: don\u0027t leave list poison in -\u003Ehash_...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  io_uring/cmd: don\u0027t leave list poison in -\u003Ehash_node  io_uring_cmd_del_cancelable() uses hlist_del() to take a command off -\u003Ecancelable_uring_cmd, which leaves LIST_POISON1/2 behind in -\u003Ehash_node. Requests are recycled through the request cache without being reinitialised, and not every user of -\u003Ehash_node sets it up before it is used:  If a vectored futex wait is woken while futex_wait_multiple_setup() is still queueing the futexes, io_futexv_wait() doesn\u0027t add the request to -\u003Efutex_list, and leaves the completion to the task_work queued by the wake up. io_futexv_complete() ends in __io_futex_complete(), whose hlist_del_init() is fine for a request that is unhashed, which is how all other users of the node leave it. If the request was a cancelable uring_cmd in its previous life, e.g. a ublk FETCH_REQ, it writes through LIST_POISON2:    Oops: general protection fault, probably for non-canonical address   KASAN: maybe wild-memory-access in range [0xdead000000000120-...]   RIP: 0010:io_futexv_complete\u002B0x219/0x420   Call Trace:    tctx_task_work_run\u002B0x804/0x950    tctx_task_work\u002B0x71/0xa0    task_work_run\u002B0x118/0x200  Leave the node unhashed.",
  "published": "2026-11-02T16:17:47Z",
  "severity": "",
  "epss": 0.00157,
  "epssPercentile": 0.04845,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.115-1",
      "fix": "DEBIAN-CVE-2026-99230",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99230",
      "released": "2026-11-03T18:58:21Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.14-1",
      "fix": "DEBIAN-CVE-2026-99230",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-99230",
      "released": "2026-11-03T18:58:21Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}