fkie_cve-2021-47498
Vulnerability from fkie_nvd
Published
2024-05-22 09:15
Modified
2025-04-01 18:40
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: dm rq: don't queue request to blk-mq during DM suspend DM uses blk-mq's quiesce/unquiesce to stop/start device mapper queue. But blk-mq's unquiesce may come from outside events, such as elevator switch, updating nr_requests or others, and request may come during suspend, so simply ask for blk-mq to requeue it. Fixes one kernel panic issue when running updating nr_requests and dm-mpath suspend/resume stress test.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ca9745efe3528feb06ca4e117188038eea2d351Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4459b11e84092658fa195a2587aff3b9637f0e7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8ca9745efe3528feb06ca4e117188038eea2d351Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b4459b11e84092658fa195a2587aff3b9637f0e7Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm rq: don\u0027t queue request to blk-mq during DM suspend\n\nDM uses blk-mq\u0027s quiesce/unquiesce to stop/start device mapper queue.\n\nBut blk-mq\u0027s unquiesce may come from outside events, such as elevator\nswitch, updating nr_requests or others, and request may come during\nsuspend, so simply ask for blk-mq to requeue it.\n\nFixes one kernel panic issue when running updating nr_requests and\ndm-mpath suspend/resume stress test."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dm rq: no poner en cola la solicitud a blk-mq durante la suspensi\u00f3n de DM. DM utiliza la funci\u00f3n de reposo/inquiesce de blk-mq para detener/iniciar la cola del asignador de dispositivos. Pero la inquietud de blk-mq puede provenir de eventos externos, como el cambio de ascensor, la actualizaci\u00f3n de nr_requests u otros, y la solicitud puede ocurrir durante la suspensi\u00f3n, as\u00ed que simplemente solicite que blk-mq la vuelva a poner en cola. Soluciona un problema de p\u00e1nico del kernel al ejecutar la actualizaci\u00f3n de nr_requests y la prueba de esfuerzo de suspensi\u00f3n/reanudaci\u00f3n de dm-mpath."
    }
  ],
  "id": "CVE-2021-47498",
  "lastModified": "2025-04-01T18:40:23.680",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
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        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
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  "published": "2024-05-22T09:15:11.673",
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      "tags": [
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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