Vulnerability-Lookup

GHSA-78XC-39M5-V2C6

Vulnerability from github – Published: 2026-02-18 18:30 – Updated: 2026-03-18 18:31

Details

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

PCI: endpoint: Avoid creating sub-groups asynchronously

The asynchronous creation of sub-groups by a delayed work could lead to a NULL pointer dereference when the driver directory is removed before the work completes.

The crash can be easily reproduced with the following commands:

# cd /sys/kernel/config/pci_ep/functions/pci_epf_test # for i in {1..20}; do mkdir test && rmdir test; done

BUG: kernel NULL pointer dereference, address: 0000000000000088 ... Call Trace: configfs_register_group+0x3d/0x190 pci_epf_cfs_work+0x41/0x110 process_one_work+0x18f/0x350 worker_thread+0x25a/0x3a0

Fix this issue by using configfs_add_default_group() API which does not have the deadlock problem as configfs_register_group() and does not require the delayed work handler.

[mani: slightly reworded the description and added stable list]

Severity

5.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-71233"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-18T16:22:30Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: Avoid creating sub-groups asynchronously\n\nThe asynchronous creation of sub-groups by a delayed work could lead to a\nNULL pointer dereference when the driver directory is removed before the\nwork completes.\n\nThe crash can be easily reproduced with the following commands:\n\n  # cd /sys/kernel/config/pci_ep/functions/pci_epf_test\n  # for i in {1..20}; do mkdir test \u0026\u0026 rmdir test; done\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000088\n  ...\n  Call Trace:\n   configfs_register_group+0x3d/0x190\n   pci_epf_cfs_work+0x41/0x110\n   process_one_work+0x18f/0x350\n   worker_thread+0x25a/0x3a0\n\nFix this issue by using configfs_add_default_group() API which does not\nhave the deadlock problem as configfs_register_group() and does not require\nthe delayed work handler.\n\n[mani: slightly reworded the description and added stable list]",
  "id": "GHSA-78xc-39m5-v2c6",
  "modified": "2026-03-18T18:31:12Z",
  "published": "2026-02-18T18:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71233"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24a253c3aa6d9a2cde46158ce9782e023bfbf32d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f609b3bffd4207cf9f2c9b41e1978457a5a1ea9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/73cee890adafa2c219bb865356e08e7f82423fe5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c5c7d06bd1f86d2c3ebe62be903a4ba42db4d2c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8cb905eca73944089a0db01443c7628a9e87012d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9af3cf58bb4c8d6dea4166011c780756b1138b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa9fb38f5fe9c80094c2138354d45cdc8d094d69"
    }
  ],
  "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-2025-71233 (GCVE-0-2025-71233)

Vulnerability from cvelistv5 – Published: 2026-02-18 14:53 – Updated: 2026-05-11 21:56

Title

PCI: endpoint: Avoid creating sub-groups asynchronously

Summary

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Avoid creating sub-groups asynchronously The asynchronous creation of sub-groups by a delayed work could lead to a NULL pointer dereference when the driver directory is removed before the work completes. The crash can be easily reproduced with the following commands: # cd /sys/kernel/config/pci_ep/functions/pci_epf_test # for i in {1..20}; do mkdir test && rmdir test; done BUG: kernel NULL pointer dereference, address: 0000000000000088 ... Call Trace: configfs_register_group+0x3d/0x190 pci_epf_cfs_work+0x41/0x110 process_one_work+0x18f/0x350 worker_thread+0x25a/0x3a0 Fix this issue by using configfs_add_default_group() API which does not have the deadlock problem as configfs_register_group() and does not require the delayed work handler. [mani: slightly reworded the description and added stable list]

Severity

No CVSS data available.

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/fa9fb38f5fe9c8009…
https://git.kernel.org/stable/c/5f609b3bffd4207cf…
https://git.kernel.org/stable/c/8cb905eca73944089…
https://git.kernel.org/stable/c/d9af3cf58bb4c8d6d…
https://git.kernel.org/stable/c/24a253c3aa6d9a2cd…
https://git.kernel.org/stable/c/73cee890adafa2c21…
https://git.kernel.org/stable/c/7c5c7d06bd1f86d2c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e85a2d7837622bd99c96f5bbc7f972da90c285a2 , < fa9fb38f5fe9c80094c2138354d45cdc8d094d69 (git) Affected: e85a2d7837622bd99c96f5bbc7f972da90c285a2 , < 5f609b3bffd4207cf9f2c9b41e1978457a5a1ea9 (git) Affected: e85a2d7837622bd99c96f5bbc7f972da90c285a2 , < 8cb905eca73944089a0db01443c7628a9e87012d (git) Affected: e85a2d7837622bd99c96f5bbc7f972da90c285a2 , < d9af3cf58bb4c8d6dea4166011c780756b1138b5 (git) Affected: e85a2d7837622bd99c96f5bbc7f972da90c285a2 , < 24a253c3aa6d9a2cde46158ce9782e023bfbf32d (git) Affected: e85a2d7837622bd99c96f5bbc7f972da90c285a2 , < 73cee890adafa2c219bb865356e08e7f82423fe5 (git) Affected: e85a2d7837622bd99c96f5bbc7f972da90c285a2 , < 7c5c7d06bd1f86d2c3ebe62be903a4ba42db4d2c (git)
Linux	Linux	Affected: 5.12 Unaffected: 0 , < 5.12 (semver) Unaffected: 5.15.201 , ≤ 5.15.* (semver) Unaffected: 6.1.164 , ≤ 6.1.* (semver) Unaffected: 6.6.127 , ≤ 6.6.* (semver) Unaffected: 6.12.72 , ≤ 6.12.* (semver) Unaffected: 6.18.11 , ≤ 6.18.* (semver) Unaffected: 6.19.1 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/endpoint/pci-ep-cfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fa9fb38f5fe9c80094c2138354d45cdc8d094d69",
              "status": "affected",
              "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2",
              "versionType": "git"
            },
            {
              "lessThan": "5f609b3bffd4207cf9f2c9b41e1978457a5a1ea9",
              "status": "affected",
              "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2",
              "versionType": "git"
            },
            {
              "lessThan": "8cb905eca73944089a0db01443c7628a9e87012d",
              "status": "affected",
              "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2",
              "versionType": "git"
            },
            {
              "lessThan": "d9af3cf58bb4c8d6dea4166011c780756b1138b5",
              "status": "affected",
              "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2",
              "versionType": "git"
            },
            {
              "lessThan": "24a253c3aa6d9a2cde46158ce9782e023bfbf32d",
              "status": "affected",
              "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2",
              "versionType": "git"
            },
            {
              "lessThan": "73cee890adafa2c219bb865356e08e7f82423fe5",
              "status": "affected",
              "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2",
              "versionType": "git"
            },
            {
              "lessThan": "7c5c7d06bd1f86d2c3ebe62be903a4ba42db4d2c",
              "status": "affected",
              "version": "e85a2d7837622bd99c96f5bbc7f972da90c285a2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/endpoint/pci-ep-cfs.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": "5.15.*",
              "status": "unaffected",
              "version": "5.15.201",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.164",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.127",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.72",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.1",
              "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": "5.15.201",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.164",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.127",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.72",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.11",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.1",
                  "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: Avoid creating sub-groups asynchronously\n\nThe asynchronous creation of sub-groups by a delayed work could lead to a\nNULL pointer dereference when the driver directory is removed before the\nwork completes.\n\nThe crash can be easily reproduced with the following commands:\n\n  # cd /sys/kernel/config/pci_ep/functions/pci_epf_test\n  # for i in {1..20}; do mkdir test \u0026\u0026 rmdir test; done\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000088\n  ...\n  Call Trace:\n   configfs_register_group+0x3d/0x190\n   pci_epf_cfs_work+0x41/0x110\n   process_one_work+0x18f/0x350\n   worker_thread+0x25a/0x3a0\n\nFix this issue by using configfs_add_default_group() API which does not\nhave the deadlock problem as configfs_register_group() and does not require\nthe delayed work handler.\n\n[mani: slightly reworded the description and added stable list]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:56:54.929Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fa9fb38f5fe9c80094c2138354d45cdc8d094d69"
        },
        {
          "url": "https://git.kernel.org/stable/c/5f609b3bffd4207cf9f2c9b41e1978457a5a1ea9"
        },
        {
          "url": "https://git.kernel.org/stable/c/8cb905eca73944089a0db01443c7628a9e87012d"
        },
        {
          "url": "https://git.kernel.org/stable/c/d9af3cf58bb4c8d6dea4166011c780756b1138b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/24a253c3aa6d9a2cde46158ce9782e023bfbf32d"
        },
        {
          "url": "https://git.kernel.org/stable/c/73cee890adafa2c219bb865356e08e7f82423fe5"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c5c7d06bd1f86d2c3ebe62be903a4ba42db4d2c"
        }
      ],
      "title": "PCI: endpoint: Avoid creating sub-groups asynchronously",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71233",
    "datePublished": "2026-02-18T14:53:17.926Z",
    "dateReserved": "2026-02-18T14:25:13.845Z",
    "dateUpdated": "2026-05-11T21:56:54.929Z",
    "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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.