{
  "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-2024-39476",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-39476",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-07-05T06:55:06.559Z",
    "updatedAt": "2026-05-23T15:50:14.107Z",
    "importedAt": "2026-10-24T01:57:16.009Z",
    "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": "md/raid5: fix deadlock that raid5d() wait for itself to clear MD_SB_CHANGE_PENDING",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: fix deadlock that raid5d() wait for itself to clear MD_SB_CHANGE_PENDING\n\nXiao reported that lvm2 test lvconvert-raid-takeover.sh can hang with\nsmall possibility, the root cause is exactly the same as commit\nbed9e27baf52 (\"Revert \"md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d\"\")\n\nHowever, Dan reported another hang after that, and junxiao investigated\nthe problem and found out that this is caused by plugged bio can't issue\nfrom raid5d().\n\nCurrent implementation in raid5d() has a weird dependence:\n\n1) md_check_recovery() from raid5d() must hold 'reconfig_mutex' to clear\n   MD_SB_CHANGE_PENDING;\n2) raid5d() handles IO in a deadloop, until all IO are issued;\n3) IO from raid5d() must wait for MD_SB_CHANGE_PENDING to be cleared;\n\nThis behaviour is introduce before v2.6, and for consequence, if other\ncontext hold 'reconfig_mutex', and md_check_recovery() can't update\nsuper_block, then raid5d() will waste one cpu 100% by the deadloop, until\n'reconfig_mutex' is released.\n\nRefer to the implementation from raid1 and raid10, fix this problem by\nskipping issue IO if MD_SB_CHANGE_PENDING is still set after\nmd_check_recovery(), daemon thread will be woken up when 'reconfig_mutex'\nis released. Meanwhile, the hang problem will be fixed as well.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f3d55bd5b7b928ad82f8075d89c908702f3593ab",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b32aa95843cac6b12c2c014d40fca18aef24a347"
            },
            {
              "version": "1c00bb624cd084e2006520ad0edacaff0fb941c4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "634ba3c97ec413cb10681c7b196db43ee461ecf4"
            },
            {
              "version": "782b3e71c957991ac8ae53318bc369049d49bb53",
              "status": "affected",
              "versionType": "git",
              "lessThan": "aa64464c8f4d2ab92f6d0b959a1e0767b829d787"
            },
            {
              "version": "9e86dffd0b02594d2e7c60c6db9e889c0395414b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "098d54934814dd876963abfe751c3b1cf7fbe56a"
            },
            {
              "version": "5e2cf333b7bd5d3e62595a44d598a254c697cd74",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3f8d5e802d4cedd445f9a89be8c3fd2d0e99024b"
            },
            {
              "version": "5e2cf333b7bd5d3e62595a44d598a254c697cd74",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cd2538e5af495b3c747e503db346470fc1ffc447"
            },
            {
              "version": "5e2cf333b7bd5d3e62595a44d598a254c697cd74",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e332a12f65d8fed8cf63bedb4e9317bb872b9ac7"
            },
            {
              "version": "5e2cf333b7bd5d3e62595a44d598a254c697cd74",
              "status": "affected",
              "versionType": "git",
              "lessThan": "151f66bb618d1fd0eeb84acb61b4a9fa5d8bb0fa"
            },
            {
              "version": "7d808fe6af8409cf9f46ed2b10840e5788985e9b",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "2cab058f2b147e0b7c01546ba00445e5701861f5",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "91962e40ec3d26e291db230cd45b302da2aff200",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.19.262",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.19.316"
            },
            {
              "version": "5.4.220",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.4.278"
            },
            {
              "version": "5.10.150",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.219"
            },
            {
              "version": "5.15.75",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.161"
            },
            {
              "version": "4.14.296",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "5.19.17",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.20"
            },
            {
              "version": "6.0.3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.1",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.1"
            },
            {
              "version": "4.19.316",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.278",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.219",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.161",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.94",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.34",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.9.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.9.*"
            },
            {
              "version": "6.10",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}