PT-2026-20442 · Linux · Linux Kernel

Published 2025-01-01 · Updated 2026-05-26 · CVE-2025-71233

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the Linux kernel related to PCI endpoint sub-group creation. Asynchronous creation of sub-groups via delayed work could result in a NULL pointer dereference if the driver directory is removed before the work completes. This can be triggered by repeatedly creating and removing directories within the /sys/kernel/config/pci ep/functions/pci epf test directory. The fix involves using the configfs add default group() API instead of configfs register group() to avoid deadlocks and the need for a delayed work handler.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

AZL-77951

CVE-2025-71233

ECHO-A0DE-BA58-2E98

OPENSUSE-SU-2026:10387-1

OPENSUSE-SU-2026:20416-1

SUSE-SU-2026:20838-1

SUSE-SU-2026:20931-1

SUSE-SU-2026:21284-1

Affected Products

Linux Kernel

References · 423

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71233.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2026:20838-1 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2025-71233 · Vendor Advisory
• https://git.kernel.org/stable/c/73cee890adafa2c219bb865356e08e7f82423fe5 · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2026:20416-1 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2025-71233 · Vendor Advisory
• https://git.kernel.org/stable/c/d9af3cf58bb4c8d6dea4166011c780756b1138b5 · Patch
• https://git.kernel.org/stable/c/fa9fb38f5fe9c80094c2138354d45cdc8d094d69 · Patch
• https://osv.dev/vulnerability/CVE-2025-71233 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2026-50160.html · Vendor Advisory
• https://osv.dev/vulnerability/AZL-77951 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-71233 · Security Note
• https://git.kernel.org/stable/c/8cb905eca73944089a0db01443c7628a9e87012d · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-71233 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2025-71233 · Vendor Advisory