Vulnerability-Lookup

GHSA-J54V-PXGX-56HG

Vulnerability from github – Published: 2026-03-18 18:31 – Updated: 2026-03-18 18:31

Details

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

nvme-fc: release admin tagset if init fails

nvme_fabrics creates an NVMe/FC controller in following path:

nvmf_dev_write()
  -> nvmf_create_ctrl()
    -> nvme_fc_create_ctrl()
      -> nvme_fc_init_ctrl()

nvme_fc_init_ctrl() allocates the admin blk-mq resources right after nvme_add_ctrl() succeeds. If any of the subsequent steps fail (changing the controller state, scheduling connect work, etc.), we jump to the fail_ctrl path, which tears down the controller references but never frees the admin queue/tag set. The leaked blk-mq allocations match the kmemleak report seen during blktests nvme/fc.

Check ctrl->ctrl.admin_tagset in the fail_ctrl path and call nvme_remove_admin_tag_set() when it is set so that all admin queue allocations are reclaimed whenever controller setup aborts.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23261"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-18T18:16:24Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-fc: release admin tagset if init fails\n\nnvme_fabrics creates an NVMe/FC controller in following path:\n\n    nvmf_dev_write()\n      -\u003e nvmf_create_ctrl()\n        -\u003e nvme_fc_create_ctrl()\n          -\u003e nvme_fc_init_ctrl()\n\nnvme_fc_init_ctrl() allocates the admin blk-mq resources right after\nnvme_add_ctrl() succeeds.  If any of the subsequent steps fail (changing\nthe controller state, scheduling connect work, etc.), we jump to the\nfail_ctrl path, which tears down the controller references but never\nfrees the admin queue/tag set.  The leaked blk-mq allocations match the\nkmemleak report seen during blktests nvme/fc.\n\nCheck ctrl-\u003ectrl.admin_tagset in the fail_ctrl path and call\nnvme_remove_admin_tag_set() when it is set so that all admin queue\nallocations are reclaimed whenever controller setup aborts.",
  "id": "GHSA-j54v-pxgx-56hg",
  "modified": "2026-03-18T18:31:18Z",
  "published": "2026-03-18T18:31:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23261"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c54d3f5ebbc5982daaa004260242dc07ac943ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b134dead095bc5a58fa2b98b90ae93428cb4b328"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1877cc7270302081a315a81a0ee8331f19f95c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e810b290922c535feb34bc90ab549446fe94d2a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa301aef50e3f3b5be6ee53457608beae5aa7a01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23261 (GCVE-0-2026-23261)

Vulnerability from cvelistv5 – Published: 2026-03-18 17:41 – Updated: 2026-03-19 16:01

Title

nvme-fc: release admin tagset if init fails

Summary

In the Linux kernel, the following vulnerability has been resolved: nvme-fc: release admin tagset if init fails nvme_fabrics creates an NVMe/FC controller in following path: nvmf_dev_write() -> nvmf_create_ctrl() -> nvme_fc_create_ctrl() -> nvme_fc_init_ctrl() nvme_fc_init_ctrl() allocates the admin blk-mq resources right after nvme_add_ctrl() succeeds. If any of the subsequent steps fail (changing the controller state, scheduling connect work, etc.), we jump to the fail_ctrl path, which tears down the controller references but never frees the admin queue/tag set. The leaked blk-mq allocations match the kmemleak report seen during blktests nvme/fc. Check ctrl->ctrl.admin_tagset in the fail_ctrl path and call nvme_remove_admin_tag_set() when it is set so that all admin queue allocations are reclaimed whenever controller setup aborts.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/7c54d3f5ebbc5982d…
	https://git.kernel.org/stable/c/fa301aef50e3f3b5b…
	https://git.kernel.org/stable/c/e810b290922c535fe…
	https://git.kernel.org/stable/c/d1877cc7270302081…

Impacted products

Vendor

Product

Version

Linux

Affected: 5fe335a80548e2eda5d51fab801108b323600e95 , < 7c54d3f5ebbc5982daaa004260242dc07ac943ea (git)
Affected: 17c3a66d7ea2d303f783796d62f99e2e23b68c90 , < fa301aef50e3f3b5be6ee53457608beae5aa7a01 (git)
Affected: ea3442efabd0aa3930c5bab73c3901ef38ef6ac3 , < e810b290922c535feb34bc90ab549446fe94d2a3 (git)
Affected: ea3442efabd0aa3930c5bab73c3901ef38ef6ac3 , < d1877cc7270302081a315a81a0ee8331f19f95c8 (git)
Affected: 0d1840b2dd8fe073c020c39bf8e8e89488070801 (git)

Linux

Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.6.124 , ≤ 6.6.* (semver)
Unaffected: 6.12.70 , ≤ 6.12.* (semver)
Unaffected: 6.18.10 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/fc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7c54d3f5ebbc5982daaa004260242dc07ac943ea",
              "status": "affected",
              "version": "5fe335a80548e2eda5d51fab801108b323600e95",
              "versionType": "git"
            },
            {
              "lessThan": "fa301aef50e3f3b5be6ee53457608beae5aa7a01",
              "status": "affected",
              "version": "17c3a66d7ea2d303f783796d62f99e2e23b68c90",
              "versionType": "git"
            },
            {
              "lessThan": "e810b290922c535feb34bc90ab549446fe94d2a3",
              "status": "affected",
              "version": "ea3442efabd0aa3930c5bab73c3901ef38ef6ac3",
              "versionType": "git"
            },
            {
              "lessThan": "d1877cc7270302081a315a81a0ee8331f19f95c8",
              "status": "affected",
              "version": "ea3442efabd0aa3930c5bab73c3901ef38ef6ac3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0d1840b2dd8fe073c020c39bf8e8e89488070801",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/fc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.6.124",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.70",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.124",
                  "versionStartIncluding": "6.6.118",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-fc: release admin tagset if init fails\n\nnvme_fabrics creates an NVMe/FC controller in following path:\n\n    nvmf_dev_write()\n      -\u003e nvmf_create_ctrl()\n        -\u003e nvme_fc_create_ctrl()\n          -\u003e nvme_fc_init_ctrl()\n\nnvme_fc_init_ctrl() allocates the admin blk-mq resources right after\nnvme_add_ctrl() succeeds.  If any of the subsequent steps fail (changing\nthe controller state, scheduling connect work, etc.), we jump to the\nfail_ctrl path, which tears down the controller references but never\nfrees the admin queue/tag set.  The leaked blk-mq allocations match the\nkmemleak report seen during blktests nvme/fc.\n\nCheck ctrl-\u003ectrl.admin_tagset in the fail_ctrl path and call\nnvme_remove_admin_tag_set() when it is set so that all admin queue\nallocations are reclaimed whenever controller setup aborts."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-19T16:01:07.303Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
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        {
          "url": "https://git.kernel.org/stable/c/e810b290922c535feb34bc90ab549446fe94d2a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/d1877cc7270302081a315a81a0ee8331f19f95c8"
        }
      ],
      "title": "nvme-fc: release admin tagset if init fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23261",
    "datePublished": "2026-03-18T17:41:07.478Z",
    "dateReserved": "2026-01-13T15:37:45.990Z",
    "dateUpdated": "2026-03-19T16:01:07.303Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-J54V-PXGX-56HG

CVE-2026-23261 (GCVE-0-2026-23261)

Tags

Sightings

Nomenclature