ghsa-5vwg-96q8-mm82
Vulnerability from github
Published
2025-04-16 15:34
Modified
2025-05-06 18:30
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

ublk: make sure ubq->canceling is set when queue is frozen

Now ublk driver depends on ubq->canceling for deciding if the request can be dispatched via uring_cmd & io_uring_cmd_complete_in_task().

Once ubq->canceling is set, the uring_cmd can be done via ublk_cancel_cmd() and io_uring_cmd_done().

So set ubq->canceling when queue is frozen, this way makes sure that the flag can be observed from ublk_queue_rq() reliably, and avoids use-after-free on uring_cmd.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-22068"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-16T15:16:01Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk: make sure ubq-\u003ecanceling is set when queue is frozen\n\nNow ublk driver depends on `ubq-\u003ecanceling` for deciding if the request\ncan be dispatched via uring_cmd \u0026 io_uring_cmd_complete_in_task().\n\nOnce ubq-\u003ecanceling is set, the uring_cmd can be done via ublk_cancel_cmd()\nand io_uring_cmd_done().\n\nSo set ubq-\u003ecanceling when queue is frozen, this way makes sure that the\nflag can be observed from ublk_queue_rq() reliably, and avoids\nuse-after-free on uring_cmd.",
  "id": "GHSA-5vwg-96q8-mm82",
  "modified": "2025-05-06T18:30:36Z",
  "published": "2025-04-16T15:34:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22068"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5491400589e7572c2d2627ed6384302f7672aa1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e3497d7dacb5aee69dd9be842b778083cae0e75"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8741d0737921ec1c03cf59aebf4d01400c2b461a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9158359015f0eda00e521e35b7bc7ebce176aebf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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