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GHSA-QR86-V236-8G77

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

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

nvmet: fix refcount leak in nvmet_sq_create()

In nvmet_sq_create(), a reference on the ctrl is taken via kref_get_unless_zero() before calling nvmet_check_sqid(). If nvmet_check_sqid() fails, the function returns the error directly without releasing the reference, leading to a leak.

Fix this by jumping to the "ctrl_put" label, which already performs the necessary nvmet_ctrl_put(ctrl). This ensures the reference is properly released on this error path.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72128"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:30Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix refcount leak in nvmet_sq_create()\n\nIn nvmet_sq_create(), a reference on the ctrl is taken\nvia kref_get_unless_zero() before calling nvmet_check_sqid().\nIf nvmet_check_sqid() fails, the function returns the error\ndirectly without releasing the reference, leading to a leak.\n\nFix this by jumping to the \"ctrl_put\" label, which already\nperforms the necessary nvmet_ctrl_put(ctrl). This ensures the\nreference is properly released on this error path.",
  "id": "GHSA-qr86-v236-8g77",
  "modified": "2026-08-15T06:32:13Z",
  "published": "2026-08-15T06:32:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72128"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26355295ce21cb046546085c3a81abe68160a784"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34b9a83c50660148bde01cde16451dbe78369749"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fcef60ed5f714a24104eb021d6397a67955ebeff"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-72128 (GCVE-0-2026-72128)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:53 – Updated: 2026-08-17 05:08

Title

nvmet: fix refcount leak in nvmet_sq_create()

Summary

In the Linux kernel, the following vulnerability has been resolved: nvmet: fix refcount leak in nvmet_sq_create() In nvmet_sq_create(), a reference on the ctrl is taken via kref_get_unless_zero() before calling nvmet_check_sqid(). If nvmet_check_sqid() fails, the function returns the error directly without releasing the reference, leading to a leak. Fix this by jumping to the "ctrl_put" label, which already performs the necessary nvmet_ctrl_put(ctrl). This ensures the reference is properly released on this error path.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/26355295ce21cb046…
https://git.kernel.org/stable/c/fcef60ed5f714a241…
https://git.kernel.org/stable/c/34b9a83c50660148b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1eb380caf5275bba1d3d6182dde1fd740f331743 , < 26355295ce21cb046546085c3a81abe68160a784 (git) Affected: 1eb380caf5275bba1d3d6182dde1fd740f331743 , < fcef60ed5f714a24104eb021d6397a67955ebeff (git) Affected: 1eb380caf5275bba1d3d6182dde1fd740f331743 , < 34b9a83c50660148bde01cde16451dbe78369749 (git)
Linux	Linux	Affected: 6.14 Unaffected: 0 , < 6.14 (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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/target/core.c"
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            }
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              "version": "6.14"
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        }
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                }
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              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: fix refcount leak in nvmet_sq_create()\n\nIn nvmet_sq_create(), a reference on the ctrl is taken\nvia kref_get_unless_zero() before calling nvmet_check_sqid().\nIf nvmet_check_sqid() fails, the function returns the error\ndirectly without releasing the reference, leading to a leak.\n\nFix this by jumping to the \"ctrl_put\" label, which already\nperforms the necessary nvmet_ctrl_put(ctrl). This ensures the\nreference is properly released on this error path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:08:44.496Z",
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    "datePublished": "2026-08-15T05:53:05.141Z",
    "dateReserved": "2026-08-09T03:40:39.907Z",
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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-QR86-V236-8G77

CVE-2026-72128 (GCVE-0-2026-72128)

Tags

Sightings

Nomenclature