PT-2025-43122 · Ath12K+2 · Ath12K+2

Published 2023-08-02 · Updated 2026-04-20 · CVE-2023-53721

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

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

Description A flaw exists in the Linux kernel’s ath12k driver within the ath12k mac op hw scan() function. The function directly uses the return value of kzalloc() in a memcpy() operation without checking for a NULL pointer. If kzalloc() fails, this can lead to a NULL pointer dereference. The issue is addressed by adding a check for arg.extraie.ptr.

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:2026-03788

CVE-2023-53721

SUSE-SU-2025:21040-1

SUSE-SU-2025:21052-1

SUSE-SU-2025:21056-1

SUSE-SU-2025:21064-1

SUSE-SU-2025:4057-1

SUSE-SU-2025:4128-1

SUSE-SU-2025:4132-1

SUSE-SU-2025:4140-1

SUSE-SU-2025:4141-1

SUSE-SU-2025:4301-1

Affected Products

Linux Kernel

Suse

Ath12K

References · 1014

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53721.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:4140-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:21052-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53721 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:21056-1 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2023-53721 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53721 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-53721 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2023-53721 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4132-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4141-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-53721 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:4301-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-03788 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:4128-1 · Vendor Advisory