cve-2021-47498
Vulnerability from cvelistv5
Published
2024-05-22 08:19
Modified
2024-11-04 12:07
Summary
dm rq: don't queue request to blk-mq during DM suspend
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website


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              "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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                "options": [
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                "role": "CISA Coordinator",
                "timestamp": "2024-05-29T17:07:40.388393Z",
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    "cna": {
      "affected": [
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          "product": "Linux",
          "programFiles": [
            "drivers/md/dm-rq.c"
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          "vendor": "Linux",
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          "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."
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        "dateUpdated": "2024-11-04T12:07:05.512Z",
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      "title": "dm rq: don\u0027t queue request to blk-mq during DM suspend",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47498",
    "datePublished": "2024-05-22T08:19:44.803Z",
    "dateReserved": "2024-05-22T06:20:56.204Z",
    "dateUpdated": "2024-11-04T12:07:05.512Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47498\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-22T09:15:11.673\",\"lastModified\":\"2024-11-01T14:35:00.603\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8ca9745efe3528feb06ca4e117188038eea2d351\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b4459b11e84092658fa195a2587aff3b9637f0e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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}


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