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CVE-2025-37906

Estado: ModificadaMedia (4.7)—

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

ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd

ublk_cancel_cmd() calls io_uring_cmd_done() to complete uring_cmd, but we may have scheduled task work via io_uring_cmd_complete_in_task() for dispatching request, then kernel crash can be triggered.

Fix it by not trying to canceling the command if ublk block request is started.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-37906",
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          "version": "3.1",
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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          "userInteraction": "NONE",
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        "exploitabilityScore": 1.8
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          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
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          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
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          "confidentialityImpact": "NONE"
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          "programFiles": [
            "drivers/block/ublk_drv.c"
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          "defaultStatus": "unaffected"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix",
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          ],
          "programFiles": [
            "drivers/block/ublk_drv.c"
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          "defaultStatus": "affected"
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  "published": "2025-05-20T16:15:27.070",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/f40139fde5278d81af3227444fd6e76a76b9506d",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd\n\nublk_cancel_cmd() calls io_uring_cmd_done() to complete uring_cmd, but\nwe may have scheduled task work via io_uring_cmd_complete_in_task() for\ndispatching request, then kernel crash can be triggered.\n\nFix it by not trying to canceling the command if ublk block request is\nstarted."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ublk: se corrige la ejecución entre io_uring_cmd_complete_in_task y ublk_cancel_cmd. ublk_cancel_cmd() llama a io_uring_cmd_done() para completar uring_cmd, pero es posible que hayamos programado el trabajo de la tarea mediante io_uring_cmd_complete_in_task() para el envío de la solicitud, lo que puede provocar un fallo del kernel. Para solucionarlo, no intente cancelar el comando si se inicia la solicitud de bloqueo de ublk."
    }
  ],
  "lastModified": "2026-07-30T06:22:31.523",
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