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CVE-2025-71233 (GCVE-0-2025-71233)

Vulnerability from cvelistv5 – Published: 2026-02-18 14:53 – Updated: 2026-05-11 21:56
VLAI
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
Show details on NVD website
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          "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]"
        }
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        "dateUpdated": "2026-05-11T21:56:54.929Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "cveId": "CVE-2025-71233",
    "datePublished": "2026-02-18T14:53:17.926Z",
    "dateReserved": "2026-02-18T14:25:13.845Z",
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      "cve": "CVE-2025-71233",
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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]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nPCI: endpoint: Evitar la creaci\u00f3n as\u00edncrona de subgrupos\\n\\nLa creaci\u00f3n as\u00edncrona de subgrupos por un trabajo retrasado podr\u00eda llevar a una desreferencia de puntero NULL cuando el directorio del controlador es eliminado antes de que el trabajo se complete.\\n\\nEl fallo puede ser f\u00e1cilmente reproducido con los siguientes comandos:\\n\\n  # cd /sys/kernel/config/pci_ep/functions/pci_epf_test\\n  # for i in {1..20}; do mkdir test \u0026amp;\u0026amp; rmdir test; done\\n\\n  BUG: kernel NULL pointer dereference, address: 0000000000000088\\n  ...\\n  Call Trace:\\n   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https://git.kernel.org/stable/c/73cee890adafa2c219bb865356e08e7f82423fe5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7c5c7d06bd1f86d2c3ebe62be903a4ba42db4d2c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8cb905eca73944089a0db01443c7628a9e87012d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d9af3cf58bb4c8d6dea4166011c780756b1138b5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fa9fb38f5fe9c80094c2138354d45cdc8d094d69\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:13:06+00:00",
      "cve": "CVE-2025-71233",
      "id": "CVE-2025-71233",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service via NULL pointer dereference in PCI endpoint configfs during asynchronous sub-group creation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-71233.json",
      "version": "3"
    }
  }
}



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  • 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.


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.