CVE-2023-54318

kernel: net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · December 30, 2025

Updated · August 5, 2026

Description

A race condition was found in the SMC networking subsystem. Iterating over the link group list in smcr_port_add() without holding the lock can cause crashes when concurrent add/remove operations modify the list.

Statement

This affects systems using SMC over RDMA networking. The race requires concurrent InfiniBand port events and link group management, typically occurring in high-availability configurations with dynamic port state changes.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-366 · Race Condition within a Thread