{
  "cveId": "CVE-2021-47569",
  "url": "https://patchblox.com/security/cve/CVE-2021-47569",
  "summary": "CVE-2021-47569 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47569, released May 24, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  io_uring: fail cancellation for EXITING tasks  W...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  io_uring: fail cancellation for EXITING tasks  WARNING: CPU: 1 PID: 20 at fs/io_uring.c:6269 io_try_cancel_userdata\u002B0x3c5/0x640 fs/io_uring.c:6269 CPU: 1 PID: 20 Comm: kworker/1:0 Not tainted 5.16.0-rc1-syzkaller #0 Workqueue: events io_fallback_req_func RIP: 0010:io_try_cancel_userdata\u002B0x3c5/0x640 fs/io_uring.c:6269 Call Trace:  \u003CTASK\u003E  io_req_task_link_timeout\u002B0x6b/0x1e0 fs/io_uring.c:6886  io_fallback_req_func\u002B0xf9/0x1ae fs/io_uring.c:1334  process_one_work\u002B0x9b2/0x1690 kernel/workqueue.c:2298  worker_thread\u002B0x658/0x11f0 kernel/workqueue.c:2445  kthread\u002B0x405/0x4f0 kernel/kthread.c:327  ret_from_fork\u002B0x1f/0x30 arch/x86/entry/entry_64.S:295  \u003C/TASK\u003E  We need original task\u0027s context to do cancellations, so if it\u0027s dying and the callback is executed in a fallback mode, fail the cancellation attempt.",
  "published": "2024-05-24T15:15:22Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00181,
  "epssPercentile": 0.07709,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.15.15-1",
      "fix": "DEBIAN-CVE-2021-47569",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47569",
      "released": "2024-05-24T15:15:22Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.15.15-1",
      "fix": "DEBIAN-CVE-2021-47569",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47569",
      "released": "2024-05-24T15:15:22Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.15.15-1",
      "fix": "DEBIAN-CVE-2021-47569",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-47569",
      "released": "2024-05-24T15:15:22Z"
    }
  ],
  "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"
  }
}