Vulnerability-Lookup

GHSA-727C-MJRQ-H39G

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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

nvme: target: rdma: fix ndev refcount leak on queue connect

nvmet_rdma_queue_connect() calls nvmet_rdma_find_get_device() which acquires a reference on the returned ndev via kref_get(). On the path where the host queue backlog is exceeded and the function returns NVME_SC_CONNECT_CTRL_BUSY, reference of ndev is not released, leaking the kref.

Fix this by adding a goto to the existing put_device label before the early return.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64321"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:13Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: target: rdma: fix ndev refcount leak on queue connect\n\nnvmet_rdma_queue_connect() calls nvmet_rdma_find_get_device() which\nacquires a reference on the returned ndev via kref_get(). On the path\nwhere the host queue backlog is exceeded and the function returns\nNVME_SC_CONNECT_CTRL_BUSY, reference of ndev is not released, leaking\nthe kref.\n\nFix this by adding a goto to the existing put_device label before the\nearly return.",
  "id": "GHSA-727c-mjrq-h39g",
  "modified": "2026-07-25T12:31:31Z",
  "published": "2026-07-25T12:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64321"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5828517d17eda27f21d29ea14800c9e0a57bad11"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a8803c4f0ac3fa7df5551bbb5a8800c434a94357"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/badc53620fe813b3a9f727ef9526f98567c2c898"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d65fe42820b890a6a4644de0a95a812471f79ad3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-64321 (GCVE-0-2026-64321)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-07-25 08:49

Title

nvme: target: rdma: fix ndev refcount leak on queue connect

Summary

In the Linux kernel, the following vulnerability has been resolved: nvme: target: rdma: fix ndev refcount leak on queue connect nvmet_rdma_queue_connect() calls nvmet_rdma_find_get_device() which acquires a reference on the returned ndev via kref_get(). On the path where the host queue backlog is exceeded and the function returns NVME_SC_CONNECT_CTRL_BUSY, reference of ndev is not released, leaking the kref. Fix this by adding a goto to the existing put_device label before the early return.

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/d65fe42820b890a6a…
https://git.kernel.org/stable/c/a8803c4f0ac3fa7df…
https://git.kernel.org/stable/c/5828517d17eda27f2…
https://git.kernel.org/stable/c/badc53620fe813b3a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 31deaeb11ba7a885116c9c30892b9f763c04d59c , < d65fe42820b890a6a4644de0a95a812471f79ad3 (git) Affected: 31deaeb11ba7a885116c9c30892b9f763c04d59c , < a8803c4f0ac3fa7df5551bbb5a8800c434a94357 (git) Affected: 31deaeb11ba7a885116c9c30892b9f763c04d59c , < 5828517d17eda27f21d29ea14800c9e0a57bad11 (git) Affected: 31deaeb11ba7a885116c9c30892b9f763c04d59c , < badc53620fe813b3a9f727ef9526f98567c2c898 (git)
Linux	Linux	Affected: 6.8 Unaffected: 0 , < 6.8 (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/target/rdma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d65fe42820b890a6a4644de0a95a812471f79ad3",
              "status": "affected",
              "version": "31deaeb11ba7a885116c9c30892b9f763c04d59c",
              "versionType": "git"
            },
            {
              "lessThan": "a8803c4f0ac3fa7df5551bbb5a8800c434a94357",
              "status": "affected",
              "version": "31deaeb11ba7a885116c9c30892b9f763c04d59c",
              "versionType": "git"
            },
            {
              "lessThan": "5828517d17eda27f21d29ea14800c9e0a57bad11",
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
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            {
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              "status": "unaffected",
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              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc1",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.96",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "operator": "OR"
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T08:49:49.541Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
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      "title": "nvme: target: rdma: fix ndev refcount leak on queue connect",
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    "cveId": "CVE-2026-64321",
    "datePublished": "2026-07-25T08:49:49.541Z",
    "dateReserved": "2026-07-19T15:36:31.780Z",
    "dateUpdated": "2026-07-25T08:49:49.541Z",
    "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.

Action not permitted

GHSA-727C-MJRQ-H39G

CVE-2026-64321 (GCVE-0-2026-64321)

Tags

Sightings

Nomenclature