5.5

CVE-2025-71233

PCI: endpoint: Avoid creating sub-groups asynchronously

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]
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.12 < 5.15.201
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.164
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.127
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.72
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.11
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.1
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.02
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/d9af3cf58bb4c8d6dea4166011c780756b1138b5
Patch
https://git.kernel.org/stable/c/24a253c3aa6d9a2cde46158ce9782e023bfbf32d
Patch
https://git.kernel.org/stable/c/73cee890adafa2c219bb865356e08e7f82423fe5
Patch
https://git.kernel.org/stable/c/5f609b3bffd4207cf9f2c9b41e1978457a5a1ea9
Patch
https://git.kernel.org/stable/c/8cb905eca73944089a0db01443c7628a9e87012d
Patch
https://git.kernel.org/stable/c/fa9fb38f5fe9c80094c2138354d45cdc8d094d69
Patch
https://git.kernel.org/stable/c/7c5c7d06bd1f86d2c3ebe62be903a4ba42db4d2c
Patch