{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2022-50552",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-50552",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-07T15:21:14.060Z",
    "updatedAt": "2026-06-01T16:04:03.010Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "blk-mq: use quiesced elevator switch when reinitializing queues",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: use quiesced elevator switch when reinitializing queues\n\nThe hctx's run_work may be racing with the elevator switch when\nreinitializing hardware queues. The queue is merely frozen in this\ncontext, but that only prevents requests from allocating and doesn't\nstop the hctx work from running. The work may get an elevator pointer\nthat's being torn down, and can result in use-after-free errors and\nkernel panics (example below). Use the quiesced elevator switch instead,\nand make the previous one static since it is now only used locally.\n\n  nvme nvme0: resetting controller\n  nvme nvme0: 32/0/0 default/read/poll queues\n  BUG: kernel NULL pointer dereference, address: 0000000000000008\n  #PF: supervisor read access in kernel mode\n  #PF: error_code(0x0000) - not-present page\n  PGD 80000020c8861067 P4D 80000020c8861067 PUD 250f8c8067 PMD 0\n  Oops: 0000 [#1] SMP PTI\n  Workqueue: kblockd blk_mq_run_work_fn\n  RIP: 0010:kyber_has_work+0x29/0x70\n\n...\n\n  Call Trace:\n   __blk_mq_do_dispatch_sched+0x83/0x2b0\n   __blk_mq_sched_dispatch_requests+0x12e/0x170\n   blk_mq_sched_dispatch_requests+0x30/0x60\n   __blk_mq_run_hw_queue+0x2b/0x50\n   process_one_work+0x1ef/0x380\n   worker_thread+0x2d/0x3e0",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f90015383cd3f1128bebfbe7a97122d97808046"
            },
            {
              "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9646443f28f33ec545ae303e613c3f476fad4dc1"
            },
            {
              "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
              "status": "affected",
              "versionType": "git",
              "lessThan": "63a681bcc32a43528ce0f690569f7f48e59c3963"
            },
            {
              "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c478b3b2900f1834cf9eda5bfef0d5696099505d"
            },
            {
              "version": "d48ece209f82c9ce07be942441b53d3fa3664936",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8237c01f1696bc53c470493bf1fe092a107648a6"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.19"
            },
            {
              "version": "5.10.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.19.17",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "version": "6.0.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "version": "6.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}