PT-2025-54164 · Linux · Linux Kernel

Published 2023-09-10 · Updated 2026-03-24 · CVE-2023-54318

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

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

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

Description The Linux kernel contains a flaw within the smc (SMC) networking subsystem. Specifically, a kernel crash can occur during the smcr port add function due to concurrent access and modification of the smc lgr list.list while iterating through it. This happens when linkgroups are added or deleted from the list simultaneously. The issue is addressed by using smc lgr list.lock to protect the list iteration within smcr port add. The crash manifests as a NULL pointer dereference, potentially leading to system instability.

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:2026-01170

CVE-2023-54318

RHSA-2025:20518

SUSE-SU-2026:0278-1

SUSE-SU-2026:0281-1

SUSE-SU-2026:0293-1

SUSE-SU-2026:0315-1

SUSE-SU-2026:20477-1

SUSE-SU-2026:20498-1

SUSE-SU-2026:20845-1

SUSE-SU-2026:20876-1

Affected Products

Linux Kernel

References · 1468

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54318.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2026:20845-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0281-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-54318 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-54318 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20498-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0278-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-54318 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-54318 · Security Note
• https://cve.org/CVERecord?id=CVE-2023-54318 · Security Note
• https://bdu.fstec.ru/vul/2026-01170 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:20477-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0293-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0315-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-54318 · Vendor Advisory