{
  "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-2025-22094",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-22094",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-04-16T14:12:45.512Z",
    "updatedAt": "2026-08-05T11:56:45.289Z",
    "importedAt": "2026-10-24T01:57:29.455Z",
    "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 ref-counting on the PMU 'vpa_pmu'",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/perf: Fix ref-counting on the PMU 'vpa_pmu'\n\nCommit 176cda0619b6 (\"powerpc/perf: Add perf interface to expose vpa\ncounters\") introduced 'vpa_pmu' to expose Book3s-HV nested APIv2 provided\nL1<->L2 context switch latency counters to L1 user-space via\nperf-events. However the newly introduced PMU named 'vpa_pmu' doesn't\nassign ownership of the PMU to the module 'vpa_pmu'. Consequently the\nmodule 'vpa_pmu' can be unloaded while one of the perf-events are still\nactive, which can lead to kernel oops and panic of the form below on a\nPseries-LPAR:\n\nBUG: Kernel NULL pointer dereference on read at 0x00000058\n<snip>\n NIP [c000000000506cb8] event_sched_out+0x40/0x258\n LR [c00000000050e8a4] __perf_remove_from_context+0x7c/0x2b0\n Call Trace:\n [c00000025fc3fc30] [c00000025f8457a8] 0xc00000025f8457a8 (unreliable)\n [c00000025fc3fc80] [fffffffffffffee0] 0xfffffffffffffee0\n [c00000025fc3fcd0] [c000000000501e70] event_function+0xa8/0x120\n<snip>\n Kernel panic - not syncing: Aiee, killing interrupt handler!\n\nFix this by adding the module ownership to 'vpa_pmu' so that the module\n'vpa_pmu' is ref-counted and prevented from being unloaded when perf-events\nare initialized.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "176cda0619b6c17a553625f6e2fcbc3981ad667d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "70ea7c5189197c6f5acdcfd8a2651be2c41e2faa"
            },
            {
              "version": "176cda0619b6c17a553625f6e2fcbc3981ad667d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6cf045b51e2c5721db7e55305f09ee32741e00f9"
            },
            {
              "version": "176cda0619b6c17a553625f6e2fcbc3981ad667d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ff99d5b6a246715f2257123cdf6c4a29cb33aa78"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.13",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.13"
            },
            {
              "version": "6.13.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.13.*"
            },
            {
              "version": "6.14.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.14.*"
            },
            {
              "version": "6.15",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}