Vulnerability-Lookup

GHSA-VH7J-GJ65-XH7C

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

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

bpf: Fix CFI mismatch in task work callback

BPF subprograms use the bpf_callback_t ABI, but task work invokes the callback through a three-argument function pointer. This trips kCFI.

Store and invoke the callback as bpf_callback_t.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-92486"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix CFI mismatch in task work callback\n\nBPF subprograms use the bpf_callback_t ABI, but task work invokes the\ncallback through a three-argument function pointer. This trips kCFI.\n\nStore and invoke the callback as bpf_callback_t.",
  "id": "GHSA-vh7j-gj65-xh7c",
  "modified": "2026-09-17T18:32:06Z",
  "published": "2026-09-17T18:32:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92486"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2805abd089576799b15092949420e3f8ba97fabd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85a33c910edc3651f68b17ae3c597c012545958f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2cbab47f44e9ea8c5a161ecba1b6bb8535771eb"
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  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-92486 (GCVE-0-2026-92486)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10

Title

bpf: Fix CFI mismatch in task work callback

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix CFI mismatch in task work callback BPF subprograms use the bpf_callback_t ABI, but task work invokes the callback through a three-argument function pointer. This trips kCFI. Store and invoke the callback as bpf_callback_t.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

3 references

URL	Tags
https://git.kernel.org/stable/c/85a33c910edc3651f…
https://git.kernel.org/stable/c/a2cbab47f44e9ea8c…
https://git.kernel.org/stable/c/2805abd089576799b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 38aa7003e369802f81a078f6673d10d97013f04f , < 85a33c910edc3651f68b17ae3c597c012545958f (git) Affected: 38aa7003e369802f81a078f6673d10d97013f04f , < a2cbab47f44e9ea8c5a161ecba1b6bb8535771eb (git) Affected: 38aa7003e369802f81a078f6673d10d97013f04f , < 2805abd089576799b15092949420e3f8ba97fabd (git)
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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        {
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          "product": "Linux",
          "programFiles": [
            "kernel/bpf/helpers.c"
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          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "38aa7003e369802f81a078f6673d10d97013f04f",
              "versionType": "git"
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              "version": "38aa7003e369802f81a078f6673d10d97013f04f",
              "versionType": "git"
            },
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            }
          ]
        },
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          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
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              "lessThan": "6.18",
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              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
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            },
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              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
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      ],
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix CFI mismatch in task work callback\n\nBPF subprograms use the bpf_callback_t ABI, but task work invokes the\ncallback through a three-argument function pointer. This trips kCFI.\n\nStore and invoke the callback as bpf_callback_t."
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    "datePublished": "2026-09-17T16:10:01.654Z",
    "dateReserved": "2026-09-16T12:21:13.870Z",
    "dateUpdated": "2026-09-17T16:10:01.654Z",
    "state": "PUBLISHED"
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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-VH7J-GJ65-XH7C

CVE-2026-92486 (GCVE-0-2026-92486)

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