PT-2025-40187 · Linux+2 · Linux Kernel+2

Published 2023-08-19 · Updated 2025-11-19 · CVE-2023-53480

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 A flaw exists in the Linux kernel related to the registration of ksets. Specifically, a null pointer dereference can occur in the kset register() function if the kset->kobj.ktype is not initialized. This happens when registering a kset without first initializing the kobj.ktype member. The issue leads to a kernel NULL pointer dereference, potentially causing system instability. The kobject get ownership() and kobject add internal() functions are involved in the call trace.

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

BDU:2026-06065

CVE-2023-53480

OESA-2025-2468

OESA-2025-2469

SUSE-SU-2025:03600-1

SUSE-SU-2025:03615-1

SUSE-SU-2025:03634-1

SUSE-SU-2025:20851-1

SUSE-SU-2025:20861-1

SUSE-SU-2025:20870-1

SUSE-SU-2025:20898-1

SUSE-SU-2025:3751-1

SUSE-SU-2025:3761-1

SUSE-SU-2025:4057-1

SUSE-SU-2025:4132-1

SUSE-SU-2025:4141-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 2013

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53480.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2023-53480 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53480 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53220 · Security Note
• https://git.kernel.org/stable/c/f3f6bf22a4f5ba649cf26ae4670de5c7f861bdef · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:20851-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50347 · Security Note
• https://git.kernel.org/stable/c/1a772881bc059c596d8ca587cbd2a233edce3d3b · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:4141-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53480 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:20870-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-39683 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-53625 · Security Note
• https://ubuntu.com/security/CVE-2023-53480 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4057-1 · Vendor Advisory