PT-2025-40183 · Linux+4 · Linux Kernel+4

Published 2023-02-15 · Updated 2026-03-14 · CVE-2023-53476

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 a potential NULL dereference within the c4iw fill res cm id entry() function. This issue arises because a condition does not accurately match a previous state check, potentially leading to a NULL dereference of listen ep or ep.

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

ALSA-2025_16880

BDU:2026-04078

CESA-2024_3138

CVE-2023-53476

RHSA-2024:2394

RHSA-2024:3138

RHSA-2024_2394

RHSA-2024_3138

SUSE-SU-2025:03615-1

SUSE-SU-2025:03628-1

SUSE-SU-2025:3716-1

SUSE-SU-2025:3761-1

SUSE-SU-2025:4189-1

Affected Products

Centos

Debian

Linux Kernel

Red Hat

Suse

References · 1126

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53476.json · Exploit
• https://bdu.fstec.ru/vul/2026-04078 · Security Note
• https://git.kernel.org/stable/c/24278dc380aab6a1aef0a75317f57ad4c2453cf6 · Patch
• https://cve.org/CVERecord?id=CVE-2023-53476 · Security Note
• https://git.kernel.org/stable/c/76e0396313c79ecd0df44ee3c18745cfac52b3e6 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53476 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-53476 · Vendor Advisory
• https://git.kernel.org/stable/c/dd55240e4364d64befcc575b0d33091881524f42 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03615-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4189-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53476 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53476 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2023-53476 · Vendor Advisory
• https://git.kernel.org/stable/c/4ca446b127c568b59cb8d9748b6f70499624bb18 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:03628-1 · Vendor Advisory