Vulnerability-Lookup

GHSA-PVQM-W959-Q2J3

Vulnerability from github – Published: 2026-08-28 09:31 – Updated: 2026-08-28 09:31

Details

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

Drivers: hv: vmbus: use generic driver_override infrastructure

When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF.

Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally.

Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80676"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T08:16:52Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nDrivers: hv: vmbus: use generic driver_override infrastructure\n\nWhen a driver is probed through __driver_attach(), the bus\u0027 match()\ncallback is called without the device lock held, thus accessing the\ndriver_override field without a lock, which can cause a UAF.\n\nFix this by using the driver-core driver_override infrastructure taking\ncare of proper locking internally.\n\nNote that calling match() from __driver_attach() without the device lock\nheld is intentional. [1]",
  "id": "GHSA-pvqm-w959-q2j3",
  "modified": "2026-08-28T09:31:49Z",
  "published": "2026-08-28T09:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80676"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e2f0833556c8c5269deb457b89d538644a3b747"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2fb010ea7ca98cd09a6d365260b769f627e73a76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/331d8900121a1d74ecd45cd2db742ddcb5a0a565"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1cb12ae81d2f7a58b0b1cfb51862afca98e6058"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-80676 (GCVE-0-2026-80676)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:49 – Updated: 2026-08-28 06:49

Title

Drivers: hv: vmbus: use generic driver_override infrastructure

Summary

In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/d1cb12ae81d2f7a58…
https://git.kernel.org/stable/c/0e2f0833556c8c526…
https://git.kernel.org/stable/c/2fb010ea7ca98cd09…
https://git.kernel.org/stable/c/331d8900121a1d74e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d765edbb301c0e196015a59b17420558088ea33f , < d1cb12ae81d2f7a58b0b1cfb51862afca98e6058 (git) Affected: d765edbb301c0e196015a59b17420558088ea33f , < 0e2f0833556c8c5269deb457b89d538644a3b747 (git) Affected: d765edbb301c0e196015a59b17420558088ea33f , < 2fb010ea7ca98cd09a6d365260b769f627e73a76 (git) Affected: d765edbb301c0e196015a59b17420558088ea33f , < 331d8900121a1d74ecd45cd2db742ddcb5a0a565 (git)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (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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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hv/vmbus_drv.c",
            "include/linux/hyperv.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d1cb12ae81d2f7a58b0b1cfb51862afca98e6058",
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "d765edbb301c0e196015a59b17420558088ea33f",
              "versionType": "git"
            },
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          "versions": [
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              "version": "4.20"
            },
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    "datePublished": "2026-08-28T06:49:14.747Z",
    "dateReserved": "2026-08-26T14:34:25.783Z",
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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-PVQM-W959-Q2J3

CVE-2026-80676 (GCVE-0-2026-80676)

Tags

Sightings

Nomenclature