Vulnerability-Lookup

GHSA-VFHR-8GQ2-GPCV

Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-09-14 15:32

Details

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

dm-stats: fix a crash if allocation of per-cpu data fails

If "dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))" fails, the code jumps to the "out" label and calls dm_stat_free. dm_stat_free does "for_each_possible_cpu(cpu) { dm_kvfree(s->stat_percpu[cpu][0].histogram, s->histogram_alloc_size);", which crashes with NULL pointer dereference if s->stat_percpu[cpu] is NULL.

This commit fixes the bug by testing s->stat_percpu[cpu] for NULL before using it.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80963"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-11T20:19:02Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-stats: fix a crash if allocation of per-cpu data fails\n\nIf \"dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))\" fails, the code\njumps to the \"out\" label and calls dm_stat_free. dm_stat_free does\n\"for_each_possible_cpu(cpu) { dm_kvfree(s-\u003estat_percpu[cpu][0].histogram,\ns-\u003ehistogram_alloc_size);\", which crashes with NULL pointer dereference\nif s-\u003estat_percpu[cpu] is NULL.\n\nThis commit fixes the bug by testing s-\u003estat_percpu[cpu] for NULL before\nusing it.",
  "id": "GHSA-vfhr-8gq2-gpcv",
  "modified": "2026-09-14T15:32:20Z",
  "published": "2026-09-11T21:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80963"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c8f7870ed3ebd512f090d7714cc2c556b9e5c75"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/389a50d094e13724f5f45e6d9d6ef734c98ba291"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/564d17573ef643c13cf6e9015124a205fa65e704"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/74210fa072960a18bb0eead487585452af722e4f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9805d87d0e26c68ee69da3928e665214d2e2851a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3f211b7a277dd404b4e7d23095be964b5b46a27"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc87e26d9cce22061dc21e51e11afef29dbbc36a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e45f0b0c41139810ff395ba2f3cfca1460a5b8a6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-80963 (GCVE-0-2026-80963)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:42 – Updated: 2026-09-14 11:59

Title

dm-stats: fix a crash if allocation of per-cpu data fails

Summary

In the Linux kernel, the following vulnerability has been resolved: dm-stats: fix a crash if allocation of per-cpu data fails If "dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))" fails, the code jumps to the "out" label and calls dm_stat_free. dm_stat_free does "for_each_possible_cpu(cpu) { dm_kvfree(s->stat_percpu[cpu][0].histogram, s->histogram_alloc_size);", which crashes with NULL pointer dereference if s->stat_percpu[cpu] is NULL. This commit fixes the bug by testing s->stat_percpu[cpu] for NULL before using it.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/e45f0b0c41139810f…
https://git.kernel.org/stable/c/9805d87d0e26c68ee…
https://git.kernel.org/stable/c/564d17573ef643c13…
https://git.kernel.org/stable/c/389a50d094e13724f…
https://git.kernel.org/stable/c/c3f211b7a277dd404…
https://git.kernel.org/stable/c/74210fa072960a18b…
https://git.kernel.org/stable/c/0c8f7870ed3ebd512…
https://git.kernel.org/stable/c/cc87e26d9cce22061…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a , < e45f0b0c41139810ff395ba2f3cfca1460a5b8a6 (git) Affected: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a , < 9805d87d0e26c68ee69da3928e665214d2e2851a (git) Affected: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a , < 564d17573ef643c13cf6e9015124a205fa65e704 (git) Affected: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a , < 389a50d094e13724f5f45e6d9d6ef734c98ba291 (git) Affected: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a , < c3f211b7a277dd404b4e7d23095be964b5b46a27 (git) Affected: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a , < 74210fa072960a18bb0eead487585452af722e4f (git) Affected: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a , < 0c8f7870ed3ebd512f090d7714cc2c556b9e5c75 (git) Affected: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a , < cc87e26d9cce22061dc21e51e11afef29dbbc36a (git)
Linux	Linux	Affected: 3.12 Unaffected: 0 , < 3.12 (semver) Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (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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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
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              "versionType": "semver"
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              "status": "unaffected",
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              "status": "unaffected",
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              "versionType": "semver"
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        }
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        {
          "url": "https://git.kernel.org/stable/c/cc87e26d9cce22061dc21e51e11afef29dbbc36a"
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      "title": "dm-stats: fix a crash if allocation of per-cpu data fails",
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    "datePublished": "2026-09-11T19:42:29.172Z",
    "dateReserved": "2026-08-26T14:34:25.810Z",
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    "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.

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.
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