Vulnerability-Lookup

GHSA-43WW-W2JP-2RJX

Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-09-11 21:31

Details

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

ring-buffer: Free cpu_buffer::free_page with subbuf_order

When sub-buffers use an order greater than 0, cpu_buffer->free_page is allocated with subbuf_order. Use the correct order for cpu_buffer->free_page.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89502"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-11T20:19:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Free cpu_buffer::free_page with subbuf_order\n\nWhen sub-buffers use an order greater than 0, cpu_buffer-\u003efree_page is\nallocated with subbuf_order. Use the correct order for\ncpu_buffer-\u003efree_page.",
  "id": "GHSA-43ww-w2jp-2rjx",
  "modified": "2026-09-11T21:31:29Z",
  "published": "2026-09-11T21:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89502"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/234b1a72e9706fe20c08c96f4374ec8e83b934cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77275ccea06eaf297e8e6ac3fc830cb72086379a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81063bbb16c4fcf0136c9117d5e49d3621dd6a1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c1ecdcdea738efe0494af908f12c0ae3a97fffa"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-89502 (GCVE-0-2026-89502)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:43 – Updated: 2026-09-11 19:43

Title

ring-buffer: Free cpu_buffer::free_page with subbuf_order

Summary

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Free cpu_buffer::free_page with subbuf_order When sub-buffers use an order greater than 0, cpu_buffer->free_page is allocated with subbuf_order. Use the correct order for cpu_buffer->free_page.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/77275ccea06eaf297…
https://git.kernel.org/stable/c/8c1ecdcdea738efe0…
https://git.kernel.org/stable/c/81063bbb16c4fcf01…
https://git.kernel.org/stable/c/234b1a72e9706fe20…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f9b94daa542a8d2532f0930f01cd9aec2d19621b , < 77275ccea06eaf297e8e6ac3fc830cb72086379a (git) Affected: f9b94daa542a8d2532f0930f01cd9aec2d19621b , < 8c1ecdcdea738efe0494af908f12c0ae3a97fffa (git) Affected: f9b94daa542a8d2532f0930f01cd9aec2d19621b , < 81063bbb16c4fcf0136c9117d5e49d3621dd6a1e (git) Affected: f9b94daa542a8d2532f0930f01cd9aec2d19621b , < 234b1a72e9706fe20c08c96f4374ec8e83b934cb (git)
Linux	Linux	Affected: 6.8 Unaffected: 0 , < 6.8 (semver) Unaffected: 6.12.109 , ≤ 6.12.* (semver) Unaffected: 6.18.50 , ≤ 6.18.* (semver) Unaffected: 7.2.4 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "kernel/trace/ring_buffer.c"
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    "dateReserved": "2026-09-11T19:38:34.715Z",
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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