Vulnerability-Lookup

GHSA-Q63G-PX5V-R7JV

Vulnerability from github – Published: 2026-06-03 18:33 – Updated: 2026-06-09 21:32

Details

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

PCI: endpoint: Add missing NULL check for alloc_workqueue()

alloc_workqueue() can return NULL on memory allocation failure. Without proper error checking, this may lead to a NULL pointer dereference when queue_work() is later called with the NULL workqueue pointer in epf_ntb_epc_init().

Add a NULL check immediately after alloc_workqueue() and return -ENOMEM on failure to prevent the driver from loading with an invalid workqueue pointer.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-71313"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-03T18:16:19Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: Add missing NULL check for alloc_workqueue()\n\nalloc_workqueue() can return NULL on memory allocation failure. Without\nproper error checking, this may lead to a NULL pointer dereference when\nqueue_work() is later called with the NULL workqueue pointer in\nepf_ntb_epc_init().\n\nAdd a NULL check immediately after alloc_workqueue() and return -ENOMEM on\nfailure to prevent the driver from loading with an invalid workqueue\npointer.",
  "id": "GHSA-q63g-px5v-r7jv",
  "modified": "2026-06-09T21:32:20Z",
  "published": "2026-06-03T18:33:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71313"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03f336a869b3a3f119d3ae52ac9723739c7fb7b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/314eab6740bcda504ef978be599f805de05ce6de"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-71313 (GCVE-0-2025-71313)

Vulnerability from cvelistv5 – Published: 2026-06-03 15:49 – Updated: 2026-06-03 15:49

Title

PCI: endpoint: Add missing NULL check for alloc_workqueue()

Summary

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Add missing NULL check for alloc_workqueue() alloc_workqueue() can return NULL on memory allocation failure. Without proper error checking, this may lead to a NULL pointer dereference when queue_work() is later called with the NULL workqueue pointer in epf_ntb_epc_init(). Add a NULL check immediately after alloc_workqueue() and return -ENOMEM on failure to prevent the driver from loading with an invalid workqueue pointer.

Severity

No CVSS data available.

Assigner

Linux

References

2 references

URL	Tags
https://git.kernel.org/stable/c/314eab6740bcda504…
https://git.kernel.org/stable/c/03f336a869b3a3f11…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8b821cf761503b80d0bd052f932adfe1bc1a0088 , < 314eab6740bcda504ef978be599f805de05ce6de (git) Affected: 8b821cf761503b80d0bd052f932adfe1bc1a0088 , < 03f336a869b3a3f119d3ae52ac9723739c7fb7b6 (git)
Linux	Linux	Affected: 5.12 Unaffected: 0 , < 5.12 (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/endpoint/functions/pci-epf-ntb.c",
            "drivers/pci/endpoint/functions/pci-epf-vntb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "314eab6740bcda504ef978be599f805de05ce6de",
              "status": "affected",
              "version": "8b821cf761503b80d0bd052f932adfe1bc1a0088",
              "versionType": "git"
            },
            {
              "lessThan": "03f336a869b3a3f119d3ae52ac9723739c7fb7b6",
              "status": "affected",
              "version": "8b821cf761503b80d0bd052f932adfe1bc1a0088",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/endpoint/functions/pci-epf-ntb.c",
            "drivers/pci/endpoint/functions/pci-epf-vntb.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": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "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: Add missing NULL check for alloc_workqueue()\n\nalloc_workqueue() can return NULL on memory allocation failure. Without\nproper error checking, this may lead to a NULL pointer dereference when\nqueue_work() is later called with the NULL workqueue pointer in\nepf_ntb_epc_init().\n\nAdd a NULL check immediately after alloc_workqueue() and return -ENOMEM on\nfailure to prevent the driver from loading with an invalid workqueue\npointer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T15:49:38.450Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/314eab6740bcda504ef978be599f805de05ce6de"
        },
        {
          "url": "https://git.kernel.org/stable/c/03f336a869b3a3f119d3ae52ac9723739c7fb7b6"
        }
      ],
      "title": "PCI: endpoint: Add missing NULL check for alloc_workqueue()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71313",
    "datePublished": "2026-06-03T15:49:38.450Z",
    "dateReserved": "2026-05-27T12:23:27.414Z",
    "dateUpdated": "2026-06-03T15:49:38.450Z",
    "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-Q63G-PX5V-R7JV

CVE-2025-71313 (GCVE-0-2025-71313)

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Sightings

Nomenclature