{
  "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-2026-89566",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89566",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:44:36.599Z",
    "updatedAt": "2026-10-21T12:47:53.628Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "jbd2: check need_resched() when skipping busy checkpoint buffers",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: check need_resched() when skipping busy checkpoint buffers\n\njournal_shrink_one_cp_list() skips busy checkpoint buffers when called\nwith JBD2_SHRINK_BUSY_SKIP.  The continue statement on this path also\nskips the need_resched() check at the end of the loop body.\n\nConsequently, when a checkpoint list contains mostly busy buffers, the\nshrinker can walk the entire list while holding journal->j_list_lock,\neven when a reschedule has been requested.  Large checkpoint lists under\nmemory pressure can therefore cause long lock hold times and leave other\nCPUs spinning on j_list_lock, resulting in soft lockups or RCU stalls.\n\nRoute the busy-buffer path through the need_resched() check so that the\nshrinker can release j_list_lock and reschedule promptly, restoring\nparity with the clean-buffer path, which already checks need_resched().\nThis does not change which checkpoint buffers are eligible for removal.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dc7ece0b827fe3b748db685fb85cd2fc3710c3f9"
            },
            {
              "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f83c23286e54180cdc83a36463a60003534cc290"
            },
            {
              "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f9182a85991a0ad5cd2940df6db75f40ad90028c"
            },
            {
              "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "595cac7f1b32d009b97f83dd2b2d6a1a445e9bb4"
            },
            {
              "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f213e12ff5c9590b1034ae8da0e6d09665c772d0"
            },
            {
              "version": "9c31bb2684f8035beca0275349d19d679b679ffb",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5fda50e262e65bd553ff777c4b280afd1495a18b",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "557fda9ed70ebf8eda2620ba3d746215285a1303",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.15.129",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.16"
            },
            {
              "version": "6.1.50",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.2"
            },
            {
              "version": "6.4.13",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.5",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.5"
            },
            {
              "version": "6.6.160",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}