Vulnerability-Lookup

GHSA-54PJ-2WQR-J294

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-23 15:33

Details

In the Linux kernel, the following vulnerability has been resolved:

s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()

ev variable is userspace controlled via event->attr.config and used as an array index after bounds checking, but without speculation barriers.

Add the missing array_index_nospec() call to prevent speculative execution.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72236"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()\n\nev variable is userspace controlled via event-\u003eattr.config and used\nas an array index after bounds checking, but without speculation\nbarriers.\n\nAdd the missing array_index_nospec() call to prevent speculative\nexecution.",
  "id": "GHSA-54pj-2wqr-j294",
  "modified": "2026-08-23T15:33:00Z",
  "published": "2026-08-15T06:32:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72236"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27206bb57c47bdbe33bccc78fa7f7e2a719a06b9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49145bce539117db4b6e9e83c0e5ef528e361050"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c249b214c686f9a1c4cf4f32893b59b189e897a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a21f3615c88421df81060b6ff89220fd34094c4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f79dff8c721bbb1f3fc312ea55e0551c2cc28801"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa1ebae4206e6afc8caa642e9eb1bbe39a9a724f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-72236 (GCVE-0-2026-72236)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:54 – Updated: 2026-08-23 12:47

Title

s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()

Summary

In the Linux kernel, the following vulnerability has been resolved: s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init() ev variable is userspace controlled via event->attr.config and used as an array index after bounds checking, but without speculation barriers. Add the missing array_index_nospec() call to prevent speculative execution.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/4c249b214c686f9a1…
https://git.kernel.org/stable/c/27206bb57c47bdbe3…
https://git.kernel.org/stable/c/a21f3615c88421df8…
https://git.kernel.org/stable/c/fa1ebae4206e6afc8…
https://git.kernel.org/stable/c/f79dff8c721bbb1f3…
https://git.kernel.org/stable/c/49145bce539117db4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 212188a596d17d519842ef2173150315735b54e1 , < 4c249b214c686f9a1c4cf4f32893b59b189e897a (git) Affected: 212188a596d17d519842ef2173150315735b54e1 , < 27206bb57c47bdbe33bccc78fa7f7e2a719a06b9 (git) Affected: 212188a596d17d519842ef2173150315735b54e1 , < a21f3615c88421df81060b6ff89220fd34094c4d (git) Affected: 212188a596d17d519842ef2173150315735b54e1 , < fa1ebae4206e6afc8caa642e9eb1bbe39a9a724f (git) Affected: 212188a596d17d519842ef2173150315735b54e1 , < f79dff8c721bbb1f3fc312ea55e0551c2cc28801 (git) Affected: 212188a596d17d519842ef2173150315735b54e1 , < 49145bce539117db4b6e9e83c0e5ef528e361050 (git)
Linux	Linux	Affected: 3.4 Unaffected: 0 , < 3.4 (semver) Unaffected: 6.1.184 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "arch/s390/kernel/perf_cpum_cf.c"
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              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.184",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()\n\nev variable is userspace controlled via event-\u003eattr.config and used\nas an array index after bounds checking, but without speculation\nbarriers.\n\nAdd the missing array_index_nospec() call to prevent speculative\nexecution."
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        {
          "url": "https://git.kernel.org/stable/c/49145bce539117db4b6e9e83c0e5ef528e361050"
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      "title": "s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()",
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    "datePublished": "2026-08-15T05:54:25.891Z",
    "dateReserved": "2026-08-09T03:40:39.914Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-54PJ-2WQR-J294

CVE-2026-72236 (GCVE-0-2026-72236)

Tags

Sightings

Nomenclature