{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.115-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  io_uring/cmd: don't 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't 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+0x219/0x420   Call Trace:    tctx_task_work_run+0x804/0x950    tctx_task_work+0x71/0xa0    task_work_run+0x118/0x200  Leave the node unhashed.",
  "id": "DEBIAN-CVE-2026-99230",
  "modified": "2026-11-03T04:47:31.039722428Z",
  "published": "2026-11-02T16:17:47.927Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-99230"
    }
  ],
  "upstream": [
    "CVE-2026-99230"
  ]
}