{
  "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-2026-80626",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80626",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-28T06:48:44.182Z",
    "updatedAt": "2026-08-28T06:48:44.182Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "powerpc/perf: fix preempt count underflow in fsl_emb_pmu_del",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/perf: fix preempt count underflow in fsl_emb_pmu_del\n\nfsl_emb_pmu_del() unconditionally calls put_cpu_var(cpu_hw_events) at\nthe 'out:' label, but only calls the matching get_cpu_var() after the\n'i < 0' early-return check. When event->hw.idx is negative the\nfunction jumps to 'out:' without having taken get_cpu_var(), and the\ntrailing put_cpu_var() then issues an unmatched preempt_enable(),\nunderflowing preempt_count.\n\nOn a CONFIG_PREEMPT=y kernel preempt_count would underflow and\neventually present as a 'scheduling while atomic' BUG.\n\nMove put_cpu_var() to pair with get_cpu_var() so the percpu access is\ncorrectly bracketed and the 'out:' label only handles perf_pmu_enable.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a11106544f33c104706ae42d27219a409b67478e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c0c7722308c5f303117d8bd555290fdf26b098da"
            },
            {
              "version": "a11106544f33c104706ae42d27219a409b67478e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "67aeb1eb93d4ffd898a3e74a7f3fe46ee71feb28"
            },
            {
              "version": "a11106544f33c104706ae42d27219a409b67478e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9a515e00b00132b6fc3f1dd62dc5204bbda8cb10"
            },
            {
              "version": "a11106544f33c104706ae42d27219a409b67478e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5397142d60aa29dcf636f5459d960bfc4f97c42a"
            },
            {
              "version": "a11106544f33c104706ae42d27219a409b67478e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b89477077c834d94381c7bf07d81193bebefcff9"
            },
            {
              "version": "a11106544f33c104706ae42d27219a409b67478e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "73711688479df333acc134e3730fff1acba1843e"
            },
            {
              "version": "a11106544f33c104706ae42d27219a409b67478e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b504fd953664c3f4d176ae8cb594adb3fda9d577"
            },
            {
              "version": "a11106544f33c104706ae42d27219a409b67478e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "81e3a86030462824a67d697739cf3f387f4ba350"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.34",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.34"
            },
            {
              "version": "5.10.261",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}