{
  "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-2024-26671",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-26671",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-02T06:49:13.834Z",
    "updatedAt": "2026-10-15T00:38:25.988Z",
    "importedAt": "2026-10-24T01:57:07.518Z",
    "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: fix IO hang from sbitmap wakeup race",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: fix IO hang from sbitmap wakeup race\n\nIn blk_mq_mark_tag_wait(), __add_wait_queue() may be re-ordered\nwith the following blk_mq_get_driver_tag() in case of getting driver\ntag failure.\n\nThen in __sbitmap_queue_wake_up(), waitqueue_active() may not observe\nthe added waiter in blk_mq_mark_tag_wait() and wake up nothing, meantime\nblk_mq_mark_tag_wait() can't get driver tag successfully.\n\nThis issue can be reproduced by running the following test in loop, and\nfio hang can be observed in < 30min when running it on my test VM\nin laptop.\n\n\tmodprobe -r scsi_debug\n\tmodprobe scsi_debug delay=0 dev_size_mb=4096 max_queue=1 host_max_queue=1 submit_queues=4\n\tdev=`ls -d /sys/bus/pseudo/drivers/scsi_debug/adapter*/host*/target*/*/block/* | head -1 | xargs basename`\n\tfio --filename=/dev/\"$dev\" --direct=1 --rw=randrw --bs=4k --iodepth=1 \\\n       \t\t--runtime=100 --numjobs=40 --time_based --name=test \\\n        \t--ioengine=libaio\n\nFix the issue by adding one explicit barrier in blk_mq_mark_tag_wait(), which\nis just fine in case of running out of tag.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "da55f2cc78418dee88400aafbbaed19d7ac8188e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9525b38180e2753f0daa1a522b7767a2aa969676"
            },
            {
              "version": "da55f2cc78418dee88400aafbbaed19d7ac8188e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ecd7744a1446eb02ccc63e493e2eb6ede4ef1e10"
            },
            {
              "version": "da55f2cc78418dee88400aafbbaed19d7ac8188e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7610ba1319253225a9ba8a9d28d472fc883b4e2f"
            },
            {
              "version": "da55f2cc78418dee88400aafbbaed19d7ac8188e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "89e0e66682e1538aeeaa3109503473663cd24c8b"
            },
            {
              "version": "da55f2cc78418dee88400aafbbaed19d7ac8188e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1d9c777d3e70bdc57dddf7a14a80059d65919e56"
            },
            {
              "version": "da55f2cc78418dee88400aafbbaed19d7ac8188e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6d8b01624a2540336a32be91f25187a433af53a0"
            },
            {
              "version": "da55f2cc78418dee88400aafbbaed19d7ac8188e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f1bc0d8163f8ee84a8d5affdf624cfad657df1d2"
            },
            {
              "version": "da55f2cc78418dee88400aafbbaed19d7ac8188e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5266caaf5660529e3da53004b8b7174cab6374ed"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.11"
            },
            {
              "version": "4.19.307",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.269",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.210",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.149",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.77",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.16",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.7.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.7.*"
            },
            {
              "version": "6.8",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}