Vulnerability-Lookup

GHSA-4FP6-V282-8Q64

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

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

PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown

epf_ntb_epc_destroy() duplicates the teardown that the caller is supposed to do later. This leads to an oops when .allow_link fails or when .drop_link is performed. Remove the helper.

Also drop pci_epc_put(). EPC device refcounting is tied to configfs EPC group lifetime, and pci_epc_put() in the .drop_link path is sufficient.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46009"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:18Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown\n\nepf_ntb_epc_destroy() duplicates the teardown that the caller is\nsupposed to do later. This leads to an oops when .allow_link fails or\nwhen .drop_link is performed. Remove the helper.\n\nAlso drop pci_epc_put(). EPC device refcounting is tied to configfs EPC\ngroup lifetime, and pci_epc_put() in the .drop_link path is sufficient.",
  "id": "GHSA-4fp6-v282-8q64",
  "modified": "2026-05-27T15:33:20Z",
  "published": "2026-05-27T15:33:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46009"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3446beddba450c8d6f9aca2f028712ac527fead3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65fc57c8b8f0b31be62be291cb1bb01755cec85d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72099f015d3c77bf2eb703d1aab113bd7a60915a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/756ca5e7ed22d9045bb4de4c981f9149278d5cd3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e813c95e4c8edd31599081e6356e20ada30e266d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-46009 (GCVE-0-2026-46009)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:56 – Updated: 2026-05-27 12:56

Title

PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown

Summary

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown epf_ntb_epc_destroy() duplicates the teardown that the caller is supposed to do later. This leads to an oops when .allow_link fails or when .drop_link is performed. Remove the helper. Also drop pci_epc_put(). EPC device refcounting is tied to configfs EPC group lifetime, and pci_epc_put() in the .drop_link path is sufficient.

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/72099f015d3c77bf2…
https://git.kernel.org/stable/c/756ca5e7ed22d9045…
https://git.kernel.org/stable/c/65fc57c8b8f0b31be…
https://git.kernel.org/stable/c/e813c95e4c8edd315…
https://git.kernel.org/stable/c/3446beddba450c8d6…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8b821cf761503b80d0bd052f932adfe1bc1a0088 , < 72099f015d3c77bf2eb703d1aab113bd7a60915a (git) Affected: 8b821cf761503b80d0bd052f932adfe1bc1a0088 , < 756ca5e7ed22d9045bb4de4c981f9149278d5cd3 (git) Affected: 8b821cf761503b80d0bd052f932adfe1bc1a0088 , < 65fc57c8b8f0b31be62be291cb1bb01755cec85d (git) Affected: 8b821cf761503b80d0bd052f932adfe1bc1a0088 , < e813c95e4c8edd31599081e6356e20ada30e266d (git) Affected: 8b821cf761503b80d0bd052f932adfe1bc1a0088 , < 3446beddba450c8d6f9aca2f028712ac527fead3 (git)
Linux	Linux	Affected: 5.12 Unaffected: 0 , < 5.12 (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/endpoint/functions/pci-epf-ntb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "72099f015d3c77bf2eb703d1aab113bd7a60915a",
              "status": "affected",
              "version": "8b821cf761503b80d0bd052f932adfe1bc1a0088",
              "versionType": "git"
            },
            {
              "lessThan": "756ca5e7ed22d9045bb4de4c981f9149278d5cd3",
              "status": "affected",
              "version": "8b821cf761503b80d0bd052f932adfe1bc1a0088",
              "versionType": "git"
            },
            {
              "lessThan": "65fc57c8b8f0b31be62be291cb1bb01755cec85d",
              "status": "affected",
              "version": "8b821cf761503b80d0bd052f932adfe1bc1a0088",
              "versionType": "git"
            },
            {
              "lessThan": "e813c95e4c8edd31599081e6356e20ada30e266d",
              "status": "affected",
              "version": "8b821cf761503b80d0bd052f932adfe1bc1a0088",
              "versionType": "git"
            },
            {
              "lessThan": "3446beddba450c8d6f9aca2f028712ac527fead3",
              "status": "affected",
              "version": "8b821cf761503b80d0bd052f932adfe1bc1a0088",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/endpoint/functions/pci-epf-ntb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
              "lessThan": "5.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.86",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.27",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.4",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1-rc1",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown\n\nepf_ntb_epc_destroy() duplicates the teardown that the caller is\nsupposed to do later. This leads to an oops when .allow_link fails or\nwhen .drop_link is performed. Remove the helper.\n\nAlso drop pci_epc_put(). EPC device refcounting is tied to configfs EPC\ngroup lifetime, and pci_epc_put() in the .drop_link path is sufficient."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:56:09.581Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/72099f015d3c77bf2eb703d1aab113bd7a60915a"
        },
        {
          "url": "https://git.kernel.org/stable/c/756ca5e7ed22d9045bb4de4c981f9149278d5cd3"
        },
        {
          "url": "https://git.kernel.org/stable/c/65fc57c8b8f0b31be62be291cb1bb01755cec85d"
        },
        {
          "url": "https://git.kernel.org/stable/c/e813c95e4c8edd31599081e6356e20ada30e266d"
        },
        {
          "url": "https://git.kernel.org/stable/c/3446beddba450c8d6f9aca2f028712ac527fead3"
        }
      ],
      "title": "PCI: endpoint: pci-epf-ntb: Remove duplicate resource teardown",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46009",
    "datePublished": "2026-05-27T12:56:09.581Z",
    "dateReserved": "2026-05-13T15:03:33.092Z",
    "dateUpdated": "2026-05-27T12:56:09.581Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-4FP6-V282-8Q64

CVE-2026-46009 (GCVE-0-2026-46009)

Tags

Sightings

Nomenclature