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GHSA-RX4W-F847-MV59

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

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

ring-buffer: Add checking nr_subbufs to persistent ring buffer validation

Sashiko reported that the code was using meta->nr_subbufs without making sure that it matched the nr_pages + 1 on data that was assuming the two were the same.

Add a check to the persistent ring buffer validation code to make sure that the saved nr_subbufs matches what we expect.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98057"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:34Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\n\nSashiko reported that the code was using meta-\u003enr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\n\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect.",
  "id": "GHSA-rx4w-f847-mv59",
  "modified": "2026-09-25T12:31:34Z",
  "published": "2026-09-25T12:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98057"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98057 (GCVE-0-2026-98057)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:24 – Updated: 2026-09-25 10:24

Title

ring-buffer: Add checking nr_subbufs to persistent ring buffer validation

Summary

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Add checking nr_subbufs to persistent ring buffer validation Sashiko reported that the code was using meta->nr_subbufs without making sure that it matched the nr_pages + 1 on data that was assuming the two were the same. Add a check to the persistent ring buffer validation code to make sure that the saved nr_subbufs matches what we expect.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/f0467190e6a9fc61e…
https://git.kernel.org/stable/c/69d502457e3f76142…
https://git.kernel.org/stable/c/6c001a62c34f13fe1…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 3ec743d558f111d8999aea24577ba66c65ee2eeb , < f0467190e6a9fc61e343c8064ef16aad513788c3 (git) Affected: f5b95f1fa2ef3a03f49eeec658ba97e721412b32 , < 69d502457e3f76142f7fcf6e2625e80e0ce8a60f (git) Affected: f5b95f1fa2ef3a03f49eeec658ba97e721412b32 , < 6c001a62c34f13fe1c6a24304c289b387d9e697d (git) Affected: 0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf (git) Affected: 6.12.16 , < 6.12.111 (semver) Affected: 6.13.4 , < 6.14 (semver)
Linux	Linux	Affected: 6.14 Unaffected: 0 , < 6.14 (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc2 , ≤ * (original_commit_for_fix)

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JSON

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          "programFiles": [
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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.

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.
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GHSA-RX4W-F847-MV59

CVE-2026-98057 (GCVE-0-2026-98057)

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