🛡️ AZL-77951 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2025-71233 affecting package kernel 6.6.126.1-1

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]

Affected software

AZL-77951 is recorded against 1 package.

  • kernel

Timeline and source

Published on 18 February 2026 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-02-18
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — —

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