{
  "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-2026-93220",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-93220",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-24T15:10:43.770Z",
    "updatedAt": "2026-10-19T09:07:31.931Z",
    "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": "sched_ext: Keep kick_sync waiting on the rq's own CPU",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Keep kick_sync waiting on the rq's own CPU\n\nkick_sync_wait_bal_cb() assumes it runs on the rq's CPU from the\n__schedule() tail: the snapshots it compares against live in that CPU's\npercpu area and the busy-wait runs with the rq lock dropped and IRQs\nenabled.\n\nHowever, dispatch can now drop the rq lock while the callback sits queued,\nand rq lock takers in that window (the sched class change paths, the scx\ntask iterator) flush pending balance callbacks on release, running the\ncallback on a foreign CPU. Such a run compares against unrelated snapshots\nand can deadlock when the executing CPU is itself a wait target.\n\nBail on a foreign CPU and leave the wait state alone. The wait only observes\nprogress that the resched kicks already guarantee and the rq's next wait\npicks up the stale cpus_to_sync bits.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4c95380701f58b8112f0b891de8d160e4199e19d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c736ea0fe7b4df920da6bd43a81c5eeecadcc8be"
            },
            {
              "version": "4c95380701f58b8112f0b891de8d160e4199e19d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e0253dd04beb03e79477c5ef4768b11135687206"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.19"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}